./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:34:21,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:34:21,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:34:21,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:34:21,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:34:21,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:34:21,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:34:21,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:34:21,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:34:21,563 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:34:21,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:34:21,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:34:21,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:34:21,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:34:21,568 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:34:21,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:34:21,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:34:21,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:34:21,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:34:21,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:34:21,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:34:21,573 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:34:21,574 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:34:21,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:34:21,574 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:34:21,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:34:21,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:34:21,575 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:34:21,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:34:21,575 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:34:21,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:34:21,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:34:21,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:34:21,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:34:21,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:34:21,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:34:21,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:34:21,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:34:21,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:34:21,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:34:21,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:34:21,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:34:21,580 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2024-11-10 17:34:21,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:34:21,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:34:21,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:34:21,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:34:21,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:34:21,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2024-11-10 17:34:23,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:34:23,647 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:34:23,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2024-11-10 17:34:23,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b64e58bb9/f249eb6706e4437f8c3c8e61b3810a87/FLAGcc17ee512 [2024-11-10 17:34:23,839 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b64e58bb9/f249eb6706e4437f8c3c8e61b3810a87 [2024-11-10 17:34:23,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:34:23,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:34:23,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:34:23,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:34:23,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:34:23,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:34:23" (1/1) ... [2024-11-10 17:34:23,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f42aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:23, skipping insertion in model container [2024-11-10 17:34:23,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:34:23" (1/1) ... [2024-11-10 17:34:23,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:34:24,323 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,366 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,371 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,376 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,383 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,419 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,421 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,423 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,428 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,449 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,450 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,452 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,452 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,466 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,466 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,468 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,468 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,481 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,482 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,483 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,484 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,503 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,503 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,506 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,506 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:34:24,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:34:24,532 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:34:24,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:34:24,755 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:34:24,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24 WrapperNode [2024-11-10 17:34:24,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:34:24,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:34:24,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:34:24,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:34:24,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:24,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:24,942 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3362 [2024-11-10 17:34:24,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:34:24,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:34:24,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:34:24,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:34:24,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:24,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:24,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,147 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-10 17:34:25,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,212 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:34:25,275 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:34:25,275 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:34:25,276 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:34:25,277 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (1/1) ... [2024-11-10 17:34:25,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:34:25,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:34:25,308 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) [2024-11-10 17:34:25,314 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 [2024-11-10 17:34:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-10 17:34:25,412 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-10 17:34:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:34:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:34:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:34:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 17:34:25,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 17:34:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:34:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:34:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-10 17:34:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 17:34:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 17:34:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:34:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 17:34:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:34:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:34:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:34:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:34:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:34:25,790 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:34:25,793 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:34:29,581 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-10 17:34:29,946 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-10 17:34:29,947 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:34:30,105 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:34:30,106 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-10 17:34:30,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:34:30 BoogieIcfgContainer [2024-11-10 17:34:30,106 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:34:30,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:34:30,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:34:30,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:34:30,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:34:23" (1/3) ... [2024-11-10 17:34:30,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71594b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:34:30, skipping insertion in model container [2024-11-10 17:34:30,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:34:24" (2/3) ... [2024-11-10 17:34:30,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71594b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:34:30, skipping insertion in model container [2024-11-10 17:34:30,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:34:30" (3/3) ... [2024-11-10 17:34:30,118 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2024-11-10 17:34:30,136 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:34:30,136 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 986 error locations. [2024-11-10 17:34:30,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:34:30,241 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;@14707707, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:34:30,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-10 17:34:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 2697 states, 1699 states have (on average 1.9505591524426134) internal successors, (3314), 2683 states have internal predecessors, (3314), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-10 17:34:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:34:30,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:30,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:34:30,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr983REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 3466530, now seen corresponding path program 1 times [2024-11-10 17:34:30,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:30,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761113145] [2024-11-10 17:34:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761113145] [2024-11-10 17:34:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761113145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:30,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:34:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351779415] [2024-11-10 17:34:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:30,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:30,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:30,602 INFO L87 Difference]: Start difference. First operand has 2697 states, 1699 states have (on average 1.9505591524426134) internal successors, (3314), 2683 states have internal predecessors, (3314), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:32,460 INFO L93 Difference]: Finished difference Result 3290 states and 3861 transitions. [2024-11-10 17:34:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-10 17:34:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:32,494 INFO L225 Difference]: With dead ends: 3290 [2024-11-10 17:34:32,495 INFO L226 Difference]: Without dead ends: 3287 [2024-11-10 17:34:32,496 INFO L431 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 [2024-11-10 17:34:32,499 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 2912 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:32,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 2644 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:34:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2024-11-10 17:34:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2936. [2024-11-10 17:34:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 1966 states have (on average 1.8453713123092574) internal successors, (3628), 2920 states have internal predecessors, (3628), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 17:34:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 3660 transitions. [2024-11-10 17:34:32,656 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 3660 transitions. Word has length 3 [2024-11-10 17:34:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:32,657 INFO L471 AbstractCegarLoop]: Abstraction has 2936 states and 3660 transitions. [2024-11-10 17:34:32,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 3660 transitions. [2024-11-10 17:34:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:34:32,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:32,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:34:32,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:34:32,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:32,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 3466531, now seen corresponding path program 1 times [2024-11-10 17:34:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467181160] [2024-11-10 17:34:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467181160] [2024-11-10 17:34:32,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467181160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:32,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:32,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:34:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417138608] [2024-11-10 17:34:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:32,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:32,759 INFO L87 Difference]: Start difference. First operand 2936 states and 3660 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:34,528 INFO L93 Difference]: Finished difference Result 4134 states and 5162 transitions. [2024-11-10 17:34:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-10 17:34:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:34,544 INFO L225 Difference]: With dead ends: 4134 [2024-11-10 17:34:34,545 INFO L226 Difference]: Without dead ends: 4134 [2024-11-10 17:34:34,545 INFO L431 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 [2024-11-10 17:34:34,546 INFO L432 NwaCegarLoop]: 2671 mSDtfsCounter, 1496 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:34,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 4707 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:34:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-10 17:34:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3806. [2024-11-10 17:34:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 2834 states have (on average 1.808045165843331) internal successors, (5124), 3787 states have internal predecessors, (5124), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 17:34:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 5162 transitions. [2024-11-10 17:34:34,674 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 5162 transitions. Word has length 3 [2024-11-10 17:34:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:34,674 INFO L471 AbstractCegarLoop]: Abstraction has 3806 states and 5162 transitions. [2024-11-10 17:34:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 5162 transitions. [2024-11-10 17:34:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 17:34:34,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:34,675 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:34:34,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:34:34,676 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr980REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:34,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1025058789, now seen corresponding path program 1 times [2024-11-10 17:34:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:34,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829948948] [2024-11-10 17:34:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829948948] [2024-11-10 17:34:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829948948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:34,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:34,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037515115] [2024-11-10 17:34:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:34,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:34:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:34:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:34:34,913 INFO L87 Difference]: Start difference. First operand 3806 states and 5162 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:38,771 INFO L93 Difference]: Finished difference Result 7114 states and 8694 transitions. [2024-11-10 17:34:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:34:38,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 17:34:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:38,793 INFO L225 Difference]: With dead ends: 7114 [2024-11-10 17:34:38,794 INFO L226 Difference]: Without dead ends: 7114 [2024-11-10 17:34:38,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:34:38,798 INFO L432 NwaCegarLoop]: 2512 mSDtfsCounter, 9699 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9702 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:38,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9702 Valid, 5708 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4357 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-10 17:34:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2024-11-10 17:34:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4844. [2024-11-10 17:34:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 3872 states have (on average 1.8403925619834711) internal successors, (7126), 4819 states have internal predecessors, (7126), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 7176 transitions. [2024-11-10 17:34:38,907 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 7176 transitions. Word has length 8 [2024-11-10 17:34:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:38,908 INFO L471 AbstractCegarLoop]: Abstraction has 4844 states and 7176 transitions. [2024-11-10 17:34:38,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 7176 transitions. [2024-11-10 17:34:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 17:34:38,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:38,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:34:38,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:34:38,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr977REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:38,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048008, now seen corresponding path program 1 times [2024-11-10 17:34:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451056316] [2024-11-10 17:34:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451056316] [2024-11-10 17:34:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451056316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:38,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:38,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:34:38,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793678246] [2024-11-10 17:34:38,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:38,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:38,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:38,975 INFO L87 Difference]: Start difference. First operand 4844 states and 7176 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:40,288 INFO L93 Difference]: Finished difference Result 5953 states and 8467 transitions. [2024-11-10 17:34:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:40,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 17:34:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:40,308 INFO L225 Difference]: With dead ends: 5953 [2024-11-10 17:34:40,308 INFO L226 Difference]: Without dead ends: 5953 [2024-11-10 17:34:40,309 INFO L431 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 [2024-11-10 17:34:40,312 INFO L432 NwaCegarLoop]: 3399 mSDtfsCounter, 2883 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:40,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 4518 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-10 17:34:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2024-11-10 17:34:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 4752. [2024-11-10 17:34:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 3872 states have (on average 1.7848657024793388) internal successors, (6911), 4727 states have internal predecessors, (6911), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6961 transitions. [2024-11-10 17:34:40,411 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6961 transitions. Word has length 9 [2024-11-10 17:34:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:40,411 INFO L471 AbstractCegarLoop]: Abstraction has 4752 states and 6961 transitions. [2024-11-10 17:34:40,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-10 17:34:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6961 transitions. [2024-11-10 17:34:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 17:34:40,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:40,412 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:34:40,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:34:40,412 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr978REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:40,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048007, now seen corresponding path program 1 times [2024-11-10 17:34:40,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:40,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407228770] [2024-11-10 17:34:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:40,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:40,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:40,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407228770] [2024-11-10 17:34:40,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407228770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:40,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:34:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087391170] [2024-11-10 17:34:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:40,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:40,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:40,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:40,523 INFO L87 Difference]: Start difference. First operand 4752 states and 6961 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:42,058 INFO L93 Difference]: Finished difference Result 7560 states and 10987 transitions. [2024-11-10 17:34:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 17:34:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:42,085 INFO L225 Difference]: With dead ends: 7560 [2024-11-10 17:34:42,086 INFO L226 Difference]: Without dead ends: 7560 [2024-11-10 17:34:42,086 INFO L431 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 [2024-11-10 17:34:42,087 INFO L432 NwaCegarLoop]: 3756 mSDtfsCounter, 2355 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:42,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 5473 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 17:34:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2024-11-10 17:34:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 5302. [2024-11-10 17:34:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 4432 states have (on average 1.776398916967509) internal successors, (7873), 5277 states have internal predecessors, (7873), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7923 transitions. [2024-11-10 17:34:42,242 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7923 transitions. Word has length 9 [2024-11-10 17:34:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:42,243 INFO L471 AbstractCegarLoop]: Abstraction has 5302 states and 7923 transitions. [2024-11-10 17:34:42,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-10 17:34:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7923 transitions. [2024-11-10 17:34:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 17:34:42,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:42,244 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:34:42,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:34:42,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr345REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:42,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash -11078433, now seen corresponding path program 1 times [2024-11-10 17:34:42,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732752334] [2024-11-10 17:34:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:42,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:42,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732752334] [2024-11-10 17:34:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732752334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:42,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457128045] [2024-11-10 17:34:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:42,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:42,345 INFO L87 Difference]: Start difference. First operand 5302 states and 7923 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 17:34:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:42,772 INFO L93 Difference]: Finished difference Result 7337 states and 10735 transitions. [2024-11-10 17:34:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:34:42,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-10 17:34:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:42,793 INFO L225 Difference]: With dead ends: 7337 [2024-11-10 17:34:42,794 INFO L226 Difference]: Without dead ends: 7337 [2024-11-10 17:34:42,794 INFO L431 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 [2024-11-10 17:34:42,795 INFO L432 NwaCegarLoop]: 3137 mSDtfsCounter, 1467 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:42,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 9046 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 17:34:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2024-11-10 17:34:42,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 5305. [2024-11-10 17:34:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 4435 states have (on average 1.7758737316798197) internal successors, (7876), 5280 states have internal predecessors, (7876), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 7926 transitions. [2024-11-10 17:34:42,893 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 7926 transitions. Word has length 13 [2024-11-10 17:34:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:42,894 INFO L471 AbstractCegarLoop]: Abstraction has 5305 states and 7926 transitions. [2024-11-10 17:34:42,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-10 17:34:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 7926 transitions. [2024-11-10 17:34:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:34:42,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:42,894 INFO L215 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] [2024-11-10 17:34:42,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:34:42,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr967REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:42,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash 260256747, now seen corresponding path program 1 times [2024-11-10 17:34:42,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:42,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464010449] [2024-11-10 17:34:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:42,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:42,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:42,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464010449] [2024-11-10 17:34:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464010449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:42,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:34:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832764808] [2024-11-10 17:34:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:42,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:42,967 INFO L87 Difference]: Start difference. First operand 5305 states and 7926 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-10 17:34:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:44,220 INFO L93 Difference]: Finished difference Result 5380 states and 8032 transitions. [2024-11-10 17:34:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:34:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-10 17:34:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:44,231 INFO L225 Difference]: With dead ends: 5380 [2024-11-10 17:34:44,232 INFO L226 Difference]: Without dead ends: 5380 [2024-11-10 17:34:44,232 INFO L431 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 [2024-11-10 17:34:44,233 INFO L432 NwaCegarLoop]: 1948 mSDtfsCounter, 3146 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:44,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 3781 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-10 17:34:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2024-11-10 17:34:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5282. [2024-11-10 17:34:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4435 states have (on average 1.765501691093574) internal successors, (7830), 5257 states have internal predecessors, (7830), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7880 transitions. [2024-11-10 17:34:44,306 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7880 transitions. Word has length 22 [2024-11-10 17:34:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:44,306 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 7880 transitions. [2024-11-10 17:34:44,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-10 17:34:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7880 transitions. [2024-11-10 17:34:44,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:34:44,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:44,308 INFO L215 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] [2024-11-10 17:34:44,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:34:44,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr968REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:44,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 260256748, now seen corresponding path program 1 times [2024-11-10 17:34:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067757411] [2024-11-10 17:34:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067757411] [2024-11-10 17:34:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067757411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:44,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:34:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072100305] [2024-11-10 17:34:44,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:44,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:44,398 INFO L87 Difference]: Start difference. First operand 5282 states and 7880 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-10 17:34:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:44,622 INFO L93 Difference]: Finished difference Result 5144 states and 7674 transitions. [2024-11-10 17:34:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:44,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2024-11-10 17:34:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:44,637 INFO L225 Difference]: With dead ends: 5144 [2024-11-10 17:34:44,637 INFO L226 Difference]: Without dead ends: 5144 [2024-11-10 17:34:44,638 INFO L431 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 [2024-11-10 17:34:44,639 INFO L432 NwaCegarLoop]: 2789 mSDtfsCounter, 61 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:44,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5524 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:34:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2024-11-10 17:34:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5144. [2024-11-10 17:34:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 4309 states have (on average 1.7693200278486887) internal successors, (7624), 5119 states have internal predecessors, (7624), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7674 transitions. [2024-11-10 17:34:44,709 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7674 transitions. Word has length 22 [2024-11-10 17:34:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:44,709 INFO L471 AbstractCegarLoop]: Abstraction has 5144 states and 7674 transitions. [2024-11-10 17:34:44,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-10 17:34:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7674 transitions. [2024-11-10 17:34:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:34:44,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:44,710 INFO L215 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] [2024-11-10 17:34:44,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:34:44,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr659REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:44,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2008294252, now seen corresponding path program 1 times [2024-11-10 17:34:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:44,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589577468] [2024-11-10 17:34:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:44,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:44,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589577468] [2024-11-10 17:34:44,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589577468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:44,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:44,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061133198] [2024-11-10 17:34:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:44,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:44,844 INFO L87 Difference]: Start difference. First operand 5144 states and 7674 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-10 17:34:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:45,207 INFO L93 Difference]: Finished difference Result 7078 states and 10356 transitions. [2024-11-10 17:34:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:34:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-10 17:34:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:45,221 INFO L225 Difference]: With dead ends: 7078 [2024-11-10 17:34:45,221 INFO L226 Difference]: Without dead ends: 7078 [2024-11-10 17:34:45,221 INFO L431 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 [2024-11-10 17:34:45,222 INFO L432 NwaCegarLoop]: 3024 mSDtfsCounter, 1330 mSDsluCounter, 5679 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 8703 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:45,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 8703 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:34:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7078 states. [2024-11-10 17:34:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7078 to 5154. [2024-11-10 17:34:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 4319 states have (on average 1.767538782125492) internal successors, (7634), 5129 states have internal predecessors, (7634), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7684 transitions. [2024-11-10 17:34:45,298 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7684 transitions. Word has length 22 [2024-11-10 17:34:45,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:45,298 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 7684 transitions. [2024-11-10 17:34:45,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-10 17:34:45,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7684 transitions. [2024-11-10 17:34:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 17:34:45,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:45,299 INFO L215 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] [2024-11-10 17:34:45,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:34:45,299 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr944REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:45,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash 998586895, now seen corresponding path program 1 times [2024-11-10 17:34:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061844606] [2024-11-10 17:34:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:45,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:45,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061844606] [2024-11-10 17:34:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061844606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:45,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:45,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:45,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834758243] [2024-11-10 17:34:45,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:45,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:45,381 INFO L87 Difference]: Start difference. First operand 5154 states and 7684 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:45,674 INFO L93 Difference]: Finished difference Result 5131 states and 7640 transitions. [2024-11-10 17:34:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:34:45,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-10 17:34:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:45,687 INFO L225 Difference]: With dead ends: 5131 [2024-11-10 17:34:45,688 INFO L226 Difference]: Without dead ends: 5131 [2024-11-10 17:34:45,688 INFO L431 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 [2024-11-10 17:34:45,689 INFO L432 NwaCegarLoop]: 2751 mSDtfsCounter, 45 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:45,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8229 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:34:45,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-11-10 17:34:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 5131. [2024-11-10 17:34:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 4303 states have (on average 1.763885661166628) internal successors, (7590), 5106 states have internal predecessors, (7590), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 7640 transitions. [2024-11-10 17:34:45,763 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 7640 transitions. Word has length 24 [2024-11-10 17:34:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:45,764 INFO L471 AbstractCegarLoop]: Abstraction has 5131 states and 7640 transitions. [2024-11-10 17:34:45,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 7640 transitions. [2024-11-10 17:34:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 17:34:45,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:45,766 INFO L215 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] [2024-11-10 17:34:45,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:34:45,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr930REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:45,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash 344062853, now seen corresponding path program 1 times [2024-11-10 17:34:45,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:45,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147806996] [2024-11-10 17:34:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:45,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:45,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147806996] [2024-11-10 17:34:45,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147806996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:45,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:45,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:34:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233878044] [2024-11-10 17:34:45,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:45,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:45,978 INFO L87 Difference]: Start difference. First operand 5131 states and 7640 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-10 17:34:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:47,717 INFO L93 Difference]: Finished difference Result 7483 states and 10848 transitions. [2024-11-10 17:34:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:34:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2024-11-10 17:34:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:47,734 INFO L225 Difference]: With dead ends: 7483 [2024-11-10 17:34:47,735 INFO L226 Difference]: Without dead ends: 7483 [2024-11-10 17:34:47,735 INFO L431 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 [2024-11-10 17:34:47,735 INFO L432 NwaCegarLoop]: 2227 mSDtfsCounter, 2354 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:47,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 5748 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:34:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7483 states. [2024-11-10 17:34:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7483 to 5127. [2024-11-10 17:34:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4303 states have (on average 1.762026493144318) internal successors, (7582), 5102 states have internal predecessors, (7582), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7632 transitions. [2024-11-10 17:34:47,892 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7632 transitions. Word has length 38 [2024-11-10 17:34:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:47,893 INFO L471 AbstractCegarLoop]: Abstraction has 5127 states and 7632 transitions. [2024-11-10 17:34:47,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-11-10 17:34:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7632 transitions. [2024-11-10 17:34:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-10 17:34:47,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:47,899 INFO L215 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] [2024-11-10 17:34:47,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:34:47,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:47,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1148214010, now seen corresponding path program 1 times [2024-11-10 17:34:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091511499] [2024-11-10 17:34:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091511499] [2024-11-10 17:34:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091511499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:48,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:48,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:48,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588283657] [2024-11-10 17:34:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:48,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:34:48,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:48,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:34:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:34:48,085 INFO L87 Difference]: Start difference. First operand 5127 states and 7632 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:34:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:48,396 INFO L93 Difference]: Finished difference Result 5115 states and 7612 transitions. [2024-11-10 17:34:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:34:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 73 [2024-11-10 17:34:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:48,407 INFO L225 Difference]: With dead ends: 5115 [2024-11-10 17:34:48,407 INFO L226 Difference]: Without dead ends: 5115 [2024-11-10 17:34:48,408 INFO L431 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 [2024-11-10 17:34:48,408 INFO L432 NwaCegarLoop]: 2749 mSDtfsCounter, 21 mSDsluCounter, 5466 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:48,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8215 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:34:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2024-11-10 17:34:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5115. [2024-11-10 17:34:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 4291 states have (on average 1.7622931717548358) internal successors, (7562), 5090 states have internal predecessors, (7562), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:34:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7612 transitions. [2024-11-10 17:34:48,473 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7612 transitions. Word has length 73 [2024-11-10 17:34:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:48,474 INFO L471 AbstractCegarLoop]: Abstraction has 5115 states and 7612 transitions. [2024-11-10 17:34:48,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-10 17:34:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7612 transitions. [2024-11-10 17:34:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-10 17:34:48,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:48,477 INFO L215 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] [2024-11-10 17:34:48,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 17:34:48,478 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:48,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2044010690, now seen corresponding path program 1 times [2024-11-10 17:34:48,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:48,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604662673] [2024-11-10 17:34:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:48,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:48,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:48,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604662673] [2024-11-10 17:34:48,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604662673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:48,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:48,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:34:48,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528713436] [2024-11-10 17:34:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:48,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:34:48,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:34:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:34:48,621 INFO L87 Difference]: Start difference. First operand 5115 states and 7612 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:48,944 INFO L93 Difference]: Finished difference Result 6648 states and 9820 transitions. [2024-11-10 17:34:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:34:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-10 17:34:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:48,956 INFO L225 Difference]: With dead ends: 6648 [2024-11-10 17:34:48,957 INFO L226 Difference]: Without dead ends: 6648 [2024-11-10 17:34:48,957 INFO L431 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 [2024-11-10 17:34:48,958 INFO L432 NwaCegarLoop]: 2766 mSDtfsCounter, 1097 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:48,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5468 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:34:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2024-11-10 17:34:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 5984. [2024-11-10 17:34:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5156 states have (on average 1.7447633824670288) internal successors, (8996), 5955 states have internal predecessors, (8996), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:34:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 9054 transitions. [2024-11-10 17:34:49,027 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 9054 transitions. Word has length 81 [2024-11-10 17:34:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:49,028 INFO L471 AbstractCegarLoop]: Abstraction has 5984 states and 9054 transitions. [2024-11-10 17:34:49,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:34:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 9054 transitions. [2024-11-10 17:34:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-10 17:34:49,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:49,029 INFO L215 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] [2024-11-10 17:34:49,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 17:34:49,030 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr886REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:49,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 924536959, now seen corresponding path program 1 times [2024-11-10 17:34:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266793041] [2024-11-10 17:34:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266793041] [2024-11-10 17:34:49,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266793041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:49,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:49,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:34:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663395986] [2024-11-10 17:34:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:49,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:34:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:34:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:34:49,606 INFO L87 Difference]: Start difference. First operand 5984 states and 9054 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-10 17:34:51,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:51,317 INFO L93 Difference]: Finished difference Result 5900 states and 8855 transitions. [2024-11-10 17:34:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:34:51,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2024-11-10 17:34:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:51,328 INFO L225 Difference]: With dead ends: 5900 [2024-11-10 17:34:51,328 INFO L226 Difference]: Without dead ends: 5900 [2024-11-10 17:34:51,329 INFO L431 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 [2024-11-10 17:34:51,329 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 2701 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:51,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 2969 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:34:51,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2024-11-10 17:34:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5340. [2024-11-10 17:34:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 4596 states have (on average 1.7003916449086163) internal successors, (7815), 5311 states have internal predecessors, (7815), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:34:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 7873 transitions. [2024-11-10 17:34:51,428 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 7873 transitions. Word has length 84 [2024-11-10 17:34:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:51,428 INFO L471 AbstractCegarLoop]: Abstraction has 5340 states and 7873 transitions. [2024-11-10 17:34:51,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-10 17:34:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 7873 transitions. [2024-11-10 17:34:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 17:34:51,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:51,429 INFO L215 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] [2024-11-10 17:34:51,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 17:34:51,430 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr879REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:51,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 137439817, now seen corresponding path program 1 times [2024-11-10 17:34:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372626949] [2024-11-10 17:34:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372626949] [2024-11-10 17:34:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372626949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414012689] [2024-11-10 17:34:51,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:51,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:34:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:34:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:34:51,721 INFO L87 Difference]: Start difference. First operand 5340 states and 7873 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 17:34:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:53,185 INFO L93 Difference]: Finished difference Result 5339 states and 7871 transitions. [2024-11-10 17:34:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:34:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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 89 [2024-11-10 17:34:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:53,195 INFO L225 Difference]: With dead ends: 5339 [2024-11-10 17:34:53,195 INFO L226 Difference]: Without dead ends: 5339 [2024-11-10 17:34:53,195 INFO L431 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 [2024-11-10 17:34:53,196 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 2 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8213 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:53,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8213 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 17:34:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2024-11-10 17:34:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 5339. [2024-11-10 17:34:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 4596 states have (on average 1.6999564838990426) internal successors, (7813), 5310 states have internal predecessors, (7813), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:34:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 7871 transitions. [2024-11-10 17:34:53,297 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 7871 transitions. Word has length 89 [2024-11-10 17:34:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:53,297 INFO L471 AbstractCegarLoop]: Abstraction has 5339 states and 7871 transitions. [2024-11-10 17:34:53,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 17:34:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 7871 transitions. [2024-11-10 17:34:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 17:34:53,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:53,300 INFO L215 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] [2024-11-10 17:34:53,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 17:34:53,300 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr880REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:53,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash 137439818, now seen corresponding path program 1 times [2024-11-10 17:34:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105557546] [2024-11-10 17:34:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:53,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:53,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105557546] [2024-11-10 17:34:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105557546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:53,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:53,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:34:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841627066] [2024-11-10 17:34:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:53,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:34:53,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:34:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:34:53,750 INFO L87 Difference]: Start difference. First operand 5339 states and 7871 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 17:34:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:55,588 INFO L93 Difference]: Finished difference Result 5338 states and 7869 transitions. [2024-11-10 17:34:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:34:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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 89 [2024-11-10 17:34:55,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:55,598 INFO L225 Difference]: With dead ends: 5338 [2024-11-10 17:34:55,598 INFO L226 Difference]: Without dead ends: 5338 [2024-11-10 17:34:55,599 INFO L431 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 [2024-11-10 17:34:55,599 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 1 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8193 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:55,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8193 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 17:34:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2024-11-10 17:34:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5338. [2024-11-10 17:34:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4594 states have (on average 1.7002612102742707) internal successors, (7811), 5309 states have internal predecessors, (7811), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:34:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 7869 transitions. [2024-11-10 17:34:55,679 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 7869 transitions. Word has length 89 [2024-11-10 17:34:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:55,680 INFO L471 AbstractCegarLoop]: Abstraction has 5338 states and 7869 transitions. [2024-11-10 17:34:55,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 17:34:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 7869 transitions. [2024-11-10 17:34:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 17:34:55,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:55,681 INFO L215 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] [2024-11-10 17:34:55,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 17:34:55,681 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:55,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash 815649094, now seen corresponding path program 1 times [2024-11-10 17:34:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108483630] [2024-11-10 17:34:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:55,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:34:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108483630] [2024-11-10 17:34:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108483630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:55,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:55,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:34:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577334378] [2024-11-10 17:34:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:55,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:34:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:34:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:34:55,934 INFO L87 Difference]: Start difference. First operand 5338 states and 7869 transitions. Second operand has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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) [2024-11-10 17:34:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:34:58,218 INFO L93 Difference]: Finished difference Result 5356 states and 7904 transitions. [2024-11-10 17:34:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:34:58,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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 [2024-11-10 17:34:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:34:58,229 INFO L225 Difference]: With dead ends: 5356 [2024-11-10 17:34:58,229 INFO L226 Difference]: Without dead ends: 5356 [2024-11-10 17:34:58,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 17:34:58,230 INFO L432 NwaCegarLoop]: 2640 mSDtfsCounter, 31 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12735 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:34:58,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12735 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-10 17:34:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2024-11-10 17:34:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5347. [2024-11-10 17:34:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4602 states have (on average 1.6996957844415472) internal successors, (7822), 5316 states have internal predecessors, (7822), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2024-11-10 17:34:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7894 transitions. [2024-11-10 17:34:58,295 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7894 transitions. Word has length 97 [2024-11-10 17:34:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:34:58,296 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7894 transitions. [2024-11-10 17:34:58,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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) [2024-11-10 17:34:58,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7894 transitions. [2024-11-10 17:34:58,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 17:34:58,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:34:58,297 INFO L215 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] [2024-11-10 17:34:58,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 17:34:58,297 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:34:58,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:34:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash 815649095, now seen corresponding path program 1 times [2024-11-10 17:34:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:34:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194020535] [2024-11-10 17:34:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:34:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:34:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:58,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:34:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:34:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:34:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:34:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194020535] [2024-11-10 17:34:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194020535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:34:58,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:34:58,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:34:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499543328] [2024-11-10 17:34:58,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:34:58,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:34:58,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:34:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:34:58,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:34:58,824 INFO L87 Difference]: Start difference. First operand 5347 states and 7894 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-11-10 17:35:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:01,000 INFO L93 Difference]: Finished difference Result 5347 states and 7892 transitions. [2024-11-10 17:35:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:35:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2024-11-10 17:35:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:01,010 INFO L225 Difference]: With dead ends: 5347 [2024-11-10 17:35:01,010 INFO L226 Difference]: Without dead ends: 5347 [2024-11-10 17:35:01,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 17:35:01,011 INFO L432 NwaCegarLoop]: 2647 mSDtfsCounter, 26 mSDsluCounter, 10099 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12746 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:01,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12746 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-10 17:35:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2024-11-10 17:35:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5347. [2024-11-10 17:35:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4602 states have (on average 1.6992611907866144) internal successors, (7820), 5316 states have internal predecessors, (7820), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2024-11-10 17:35:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7892 transitions. [2024-11-10 17:35:01,088 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7892 transitions. Word has length 97 [2024-11-10 17:35:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:01,088 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7892 transitions. [2024-11-10 17:35:01,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-11-10 17:35:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7892 transitions. [2024-11-10 17:35:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-10 17:35:01,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:01,091 INFO L215 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] [2024-11-10 17:35:01,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 17:35:01,091 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:01,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -353983941, now seen corresponding path program 1 times [2024-11-10 17:35:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19107726] [2024-11-10 17:35:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:01,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19107726] [2024-11-10 17:35:01,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19107726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114826103] [2024-11-10 17:35:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:01,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:35:01,604 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) [2024-11-10 17:35:01,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:35:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:01,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 17:35:01,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:35:02,090 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 17:35:02,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-10 17:35:02,129 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 [2024-11-10 17:35:02,224 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 [2024-11-10 17:35:02,418 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:02,418 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 [2024-11-10 17:35:02,458 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 [2024-11-10 17:35:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:02,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:35:02,531 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_676 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_676) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-10 17:35:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114826103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:02,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:35:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2024-11-10 17:35:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562328870] [2024-11-10 17:35:02,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:35:02,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 17:35:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:35:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 17:35:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=292, Unknown=1, NotChecked=34, Total=380 [2024-11-10 17:35:02,537 INFO L87 Difference]: Start difference. First operand 5347 states and 7892 transitions. Second operand has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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) [2024-11-10 17:35:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:08,617 INFO L93 Difference]: Finished difference Result 5354 states and 7898 transitions. [2024-11-10 17:35:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 17:35:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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 [2024-11-10 17:35:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:08,628 INFO L225 Difference]: With dead ends: 5354 [2024-11-10 17:35:08,628 INFO L226 Difference]: Without dead ends: 5354 [2024-11-10 17:35:08,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=469, Unknown=1, NotChecked=44, Total=600 [2024-11-10 17:35:08,629 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2728 mSDsluCounter, 21613 mSDsCounter, 0 mSdLazyCounter, 12812 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 23436 SdHoareTripleChecker+Invalid, 12839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:08,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 23436 Invalid, 12839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 12812 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-10 17:35:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2024-11-10 17:35:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5351. [2024-11-10 17:35:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 4606 states have (on average 1.6984368215371255) internal successors, (7823), 5319 states have internal predecessors, (7823), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:35:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7883 transitions. [2024-11-10 17:35:08,748 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7883 transitions. Word has length 98 [2024-11-10 17:35:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:08,749 INFO L471 AbstractCegarLoop]: Abstraction has 5351 states and 7883 transitions. [2024-11-10 17:35:08,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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) [2024-11-10 17:35:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7883 transitions. [2024-11-10 17:35:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-10 17:35:08,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:08,750 INFO L215 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] [2024-11-10 17:35:08,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 17:35:08,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:08,951 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:08,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -353983940, now seen corresponding path program 1 times [2024-11-10 17:35:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:08,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357274975] [2024-11-10 17:35:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:09,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:09,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357274975] [2024-11-10 17:35:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357274975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150885595] [2024-11-10 17:35:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:09,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:09,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:35:09,739 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) [2024-11-10 17:35:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:35:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:10,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 17:35:10,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:35:10,147 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:35:10,147 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 [2024-11-10 17:35:10,152 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 [2024-11-10 17:35:10,163 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 [2024-11-10 17:35:10,169 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 [2024-11-10 17:35:10,229 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 [2024-11-10 17:35:10,234 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 [2024-11-10 17:35:10,337 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:10,337 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 [2024-11-10 17:35:10,343 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 [2024-11-10 17:35:10,371 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 [2024-11-10 17:35:10,375 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 [2024-11-10 17:35:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:10,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:35:10,468 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_825 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_825 (Array Int Int)) (v_ArrVal_824 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-10 17:35:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150885595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:10,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:35:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-10 17:35:10,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803566634] [2024-11-10 17:35:10,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:35:10,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 17:35:10,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:35:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 17:35:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-10 17:35:10,473 INFO L87 Difference]: Start difference. First operand 5351 states and 7883 transitions. Second operand has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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) [2024-11-10 17:35:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:15,051 INFO L93 Difference]: Finished difference Result 5353 states and 7896 transitions. [2024-11-10 17:35:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:35:15,052 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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 [2024-11-10 17:35:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:15,058 INFO L225 Difference]: With dead ends: 5353 [2024-11-10 17:35:15,058 INFO L226 Difference]: Without dead ends: 5353 [2024-11-10 17:35:15,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=420, Unknown=1, NotChecked=42, Total=552 [2024-11-10 17:35:15,059 INFO L432 NwaCegarLoop]: 1829 mSDtfsCounter, 2723 mSDsluCounter, 11119 mSDsCounter, 0 mSdLazyCounter, 9334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 9378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 9334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:15,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 12948 Invalid, 9378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 9334 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-10 17:35:15,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2024-11-10 17:35:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5341. [2024-11-10 17:35:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 4598 states have (on average 1.6989995650282732) internal successors, (7812), 5311 states have internal predecessors, (7812), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:35:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 7870 transitions. [2024-11-10 17:35:15,118 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 7870 transitions. Word has length 98 [2024-11-10 17:35:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:15,118 INFO L471 AbstractCegarLoop]: Abstraction has 5341 states and 7870 transitions. [2024-11-10 17:35:15,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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) [2024-11-10 17:35:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 7870 transitions. [2024-11-10 17:35:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-10 17:35:15,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:15,119 INFO L215 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] [2024-11-10 17:35:15,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 17:35:15,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-10 17:35:15,324 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:15,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:15,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821520, now seen corresponding path program 1 times [2024-11-10 17:35:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004971840] [2024-11-10 17:35:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:15,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:15,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004971840] [2024-11-10 17:35:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004971840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:35:15,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:35:15,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-10 17:35:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630147389] [2024-11-10 17:35:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:35:15,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 17:35:15,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:35:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 17:35:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-10 17:35:15,790 INFO L87 Difference]: Start difference. First operand 5341 states and 7870 transitions. Second operand has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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) [2024-11-10 17:35:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:19,395 INFO L93 Difference]: Finished difference Result 5360 states and 7904 transitions. [2024-11-10 17:35:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:35:19,395 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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 [2024-11-10 17:35:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:19,401 INFO L225 Difference]: With dead ends: 5360 [2024-11-10 17:35:19,401 INFO L226 Difference]: Without dead ends: 5360 [2024-11-10 17:35:19,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-10 17:35:19,402 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2734 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 8871 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 16234 SdHoareTripleChecker+Invalid, 8895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 8871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:19,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 16234 Invalid, 8895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 8871 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-10 17:35:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2024-11-10 17:35:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 5356. [2024-11-10 17:35:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 4612 states have (on average 1.6975281873373806) internal successors, (7829), 5324 states have internal predecessors, (7829), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:35:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7889 transitions. [2024-11-10 17:35:19,465 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7889 transitions. Word has length 100 [2024-11-10 17:35:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:19,465 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7889 transitions. [2024-11-10 17:35:19,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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) [2024-11-10 17:35:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7889 transitions. [2024-11-10 17:35:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-10 17:35:19,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:19,467 INFO L215 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] [2024-11-10 17:35:19,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 17:35:19,467 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:19,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821519, now seen corresponding path program 1 times [2024-11-10 17:35:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704782457] [2024-11-10 17:35:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:20,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:20,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:20,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704782457] [2024-11-10 17:35:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704782457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:35:20,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:35:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 17:35:20,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019245092] [2024-11-10 17:35:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:35:20,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 17:35:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:35:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 17:35:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-10 17:35:20,133 INFO L87 Difference]: Start difference. First operand 5356 states and 7889 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2024-11-10 17:35:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:25,201 INFO L93 Difference]: Finished difference Result 5359 states and 7902 transitions. [2024-11-10 17:35:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 17:35:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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 [2024-11-10 17:35:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:25,210 INFO L225 Difference]: With dead ends: 5359 [2024-11-10 17:35:25,210 INFO L226 Difference]: Without dead ends: 5359 [2024-11-10 17:35:25,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-10 17:35:25,211 INFO L432 NwaCegarLoop]: 1830 mSDtfsCounter, 2726 mSDsluCounter, 14363 mSDsCounter, 0 mSdLazyCounter, 11570 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 16193 SdHoareTripleChecker+Invalid, 11592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:25,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 16193 Invalid, 11592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 11570 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-10 17:35:25,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2024-11-10 17:35:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5356. [2024-11-10 17:35:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 4612 states have (on average 1.6970945359930616) internal successors, (7827), 5324 states have internal predecessors, (7827), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:35:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7887 transitions. [2024-11-10 17:35:25,272 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7887 transitions. Word has length 100 [2024-11-10 17:35:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:25,273 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7887 transitions. [2024-11-10 17:35:25,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2024-11-10 17:35:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7887 transitions. [2024-11-10 17:35:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 17:35:25,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:25,274 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:35:25,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 17:35:25,274 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:25,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894757, now seen corresponding path program 1 times [2024-11-10 17:35:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964364141] [2024-11-10 17:35:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:25,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:25,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964364141] [2024-11-10 17:35:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964364141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184161868] [2024-11-10 17:35:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:25,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:35:25,811 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) [2024-11-10 17:35:25,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 17:35:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:26,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 17:35:26,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:35:26,259 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 17:35:26,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-10 17:35:26,291 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 [2024-11-10 17:35:26,363 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 [2024-11-10 17:35:26,492 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:26,493 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 [2024-11-10 17:35:26,585 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:26,585 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 [2024-11-10 17:35:26,600 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 [2024-11-10 17:35:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:26,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:35:26,642 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1111 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1111) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-10 17:35:26,701 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1111 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1114))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1111)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-10 17:35:26,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184161868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:26,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:35:26,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-10 17:35:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062176398] [2024-11-10 17:35:26,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:35:26,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 17:35:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:35:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 17:35:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=425, Unknown=11, NotChecked=86, Total=600 [2024-11-10 17:35:26,705 INFO L87 Difference]: Start difference. First operand 5356 states and 7887 transitions. Second operand has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 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) [2024-11-10 17:35:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:35:33,327 INFO L93 Difference]: Finished difference Result 5358 states and 7900 transitions. [2024-11-10 17:35:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 17:35:33,327 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 101 [2024-11-10 17:35:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:35:33,334 INFO L225 Difference]: With dead ends: 5358 [2024-11-10 17:35:33,335 INFO L226 Difference]: Without dead ends: 5358 [2024-11-10 17:35:33,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=591, Unknown=13, NotChecked=102, Total=812 [2024-11-10 17:35:33,335 INFO L432 NwaCegarLoop]: 1822 mSDtfsCounter, 2698 mSDsluCounter, 25167 mSDsCounter, 0 mSdLazyCounter, 14779 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 26989 SdHoareTripleChecker+Invalid, 14804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 14779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:35:33,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 26989 Invalid, 14804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 14779 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-10 17:35:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2024-11-10 17:35:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 5355. [2024-11-10 17:35:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 4612 states have (on average 1.6966608846487423) internal successors, (7825), 5323 states have internal predecessors, (7825), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:35:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7885 transitions. [2024-11-10 17:35:33,395 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7885 transitions. Word has length 101 [2024-11-10 17:35:33,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:35:33,396 INFO L471 AbstractCegarLoop]: Abstraction has 5355 states and 7885 transitions. [2024-11-10 17:35:33,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 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) [2024-11-10 17:35:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7885 transitions. [2024-11-10 17:35:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 17:35:33,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:35:33,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:35:33,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 17:35:33,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:33,602 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:35:33,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:35:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894756, now seen corresponding path program 1 times [2024-11-10 17:35:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:35:33,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075206274] [2024-11-10 17:35:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:35:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:34,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:35:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:34,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:35:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075206274] [2024-11-10 17:35:34,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075206274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:35:34,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252849905] [2024-11-10 17:35:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:35:34,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:35:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:35:34,405 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) [2024-11-10 17:35:34,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 17:35:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:35:34,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 17:35:34,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:35:34,807 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:35:34,807 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 [2024-11-10 17:35:34,814 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 [2024-11-10 17:35:34,825 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 [2024-11-10 17:35:34,829 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 [2024-11-10 17:35:34,891 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 [2024-11-10 17:35:34,894 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 [2024-11-10 17:35:34,991 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:34,991 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 [2024-11-10 17:35:34,998 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 [2024-11-10 17:35:35,064 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:35:35,065 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 [2024-11-10 17:35:35,069 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 [2024-11-10 17:35:35,087 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 [2024-11-10 17:35:35,091 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 [2024-11-10 17:35:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:35:35,095 INFO L311 TraceCheckSpWp]: Computing backward predicates...