./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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_BER_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 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 02:42:58,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 02:42:58,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 02:42:58,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 02:42:58,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 02:42:58,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 02:42:58,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 02:42:58,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 02:42:58,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 02:42:58,174 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 02:42:58,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 02:42:58,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 02:42:58,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 02:42:58,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 02:42:58,176 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 02:42:58,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 02:42:58,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 02:42:58,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 02:42:58,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 02:42:58,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 02:42:58,178 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 02:42:58,182 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 02:42:58,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 02:42:58,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 02:42:58,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 02:42:58,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 02:42:58,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 02:42:58,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 02:42:58,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 02:42:58,184 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 02:42:58,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 02:42:58,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 02:42:58,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 02:42:58,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 02:42:58,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 02:42:58,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 02:42:58,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 02:42:58,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 02:42:58,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 02:42:58,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 02:42:58,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 02:42:58,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 02:42:58,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 [2024-11-17 02:42:58,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 02:42:58,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 02:42:58,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 02:42:58,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 02:42:58,423 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 02:42:58,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2024-11-17 02:42:59,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 02:43:00,010 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 02:43:00,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2024-11-17 02:43:00,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dcc50ffe/2c16a734d05140918f4453610f3cac54/FLAG6abcc1b73 [2024-11-17 02:43:00,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dcc50ffe/2c16a734d05140918f4453610f3cac54 [2024-11-17 02:43:00,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 02:43:00,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 02:43:00,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 02:43:00,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 02:43:00,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 02:43:00,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7dbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00, skipping insertion in model container [2024-11-17 02:43:00,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 02:43:00,524 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,556 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,561 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,566 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,573 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,616 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,622 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,625 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,631 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,647 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,648 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,650 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,650 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,665 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,666 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,667 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,668 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,678 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,678 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,691 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,692 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,692 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 02:43:00,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 02:43:00,714 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 02:43:00,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 02:43:00,834 INFO L204 MainTranslator]: Completed translation [2024-11-17 02:43:00,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00 WrapperNode [2024-11-17 02:43:00,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 02:43:00,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 02:43:00,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 02:43:00,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 02:43:00,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,953 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3362 [2024-11-17 02:43:00,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 02:43:00,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 02:43:00,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 02:43:00,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 02:43:00,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:00,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,162 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]. [2024-11-17 02:43:01,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 02:43:01,243 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 02:43:01,244 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 02:43:01,244 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 02:43:01,244 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (1/1) ... [2024-11-17 02:43:01,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 02:43:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:43:01,278 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) [2024-11-17 02:43:01,280 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 [2024-11-17 02:43:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-17 02:43:01,323 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-17 02:43:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 02:43:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 02:43:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 02:43:01,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-17 02:43:01,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-17 02:43:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-17 02:43:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-17 02:43:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 02:43:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 02:43:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 02:43:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 02:43:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 02:43:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 02:43:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 02:43:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 02:43:01,710 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 02:43:01,713 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 02:43:04,808 INFO L1250 $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; [2024-11-17 02:43:05,082 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-17 02:43:05,083 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 02:43:05,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 02:43:05,189 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-17 02:43:05,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 02:43:05 BoogieIcfgContainer [2024-11-17 02:43:05,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 02:43:05,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 02:43:05,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 02:43:05,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 02:43:05,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:43:00" (1/3) ... [2024-11-17 02:43:05,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2737c6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:43:05, skipping insertion in model container [2024-11-17 02:43:05,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:43:00" (2/3) ... [2024-11-17 02:43:05,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2737c6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:43:05, skipping insertion in model container [2024-11-17 02:43:05,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 02:43:05" (3/3) ... [2024-11-17 02:43:05,200 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-1.i [2024-11-17 02:43:05,229 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 02:43:05,234 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 986 error locations. [2024-11-17 02:43:05,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 02:43:05,377 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;@233dac14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 02:43:05,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-17 02:43:05,396 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) [2024-11-17 02:43:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-17 02:43:05,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:05,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-17 02:43:05,410 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)] === [2024-11-17 02:43:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 3466530, now seen corresponding path program 1 times [2024-11-17 02:43:05,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:05,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289274676] [2024-11-17 02:43:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289274676] [2024-11-17 02:43:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289274676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:05,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:05,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 02:43:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733565493] [2024-11-17 02:43:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:05,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:05,731 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) [2024-11-17 02:43:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:07,333 INFO L93 Difference]: Finished difference Result 3290 states and 3861 transitions. [2024-11-17 02:43:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:07,336 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 [2024-11-17 02:43:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:07,360 INFO L225 Difference]: With dead ends: 3290 [2024-11-17 02:43:07,360 INFO L226 Difference]: Without dead ends: 3287 [2024-11-17 02:43:07,361 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 [2024-11-17 02:43:07,364 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 2912 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:07,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 2644 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-17 02:43:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2024-11-17 02:43:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2936. [2024-11-17 02:43:07,575 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) [2024-11-17 02:43:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 3660 transitions. [2024-11-17 02:43:07,585 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 3660 transitions. Word has length 3 [2024-11-17 02:43:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:07,585 INFO L471 AbstractCegarLoop]: Abstraction has 2936 states and 3660 transitions. [2024-11-17 02:43:07,586 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) [2024-11-17 02:43:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 3660 transitions. [2024-11-17 02:43:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-17 02:43:07,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:07,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-17 02:43:07,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 02:43:07,587 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)] === [2024-11-17 02:43:07,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash 3466531, now seen corresponding path program 1 times [2024-11-17 02:43:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:07,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604458946] [2024-11-17 02:43:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604458946] [2024-11-17 02:43:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604458946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 02:43:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990729756] [2024-11-17 02:43:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:07,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:07,711 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) [2024-11-17 02:43:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:09,246 INFO L93 Difference]: Finished difference Result 4134 states and 5162 transitions. [2024-11-17 02:43:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:09,247 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 [2024-11-17 02:43:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:09,290 INFO L225 Difference]: With dead ends: 4134 [2024-11-17 02:43:09,290 INFO L226 Difference]: Without dead ends: 4134 [2024-11-17 02:43:09,292 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 [2024-11-17 02:43:09,293 INFO L432 NwaCegarLoop]: 2671 mSDtfsCounter, 1496 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:09,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 4707 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-17 02:43:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-17 02:43:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3806. [2024-11-17 02:43:09,369 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) [2024-11-17 02:43:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 5162 transitions. [2024-11-17 02:43:09,385 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 5162 transitions. Word has length 3 [2024-11-17 02:43:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:09,385 INFO L471 AbstractCegarLoop]: Abstraction has 3806 states and 5162 transitions. [2024-11-17 02:43:09,385 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) [2024-11-17 02:43:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 5162 transitions. [2024-11-17 02:43:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 02:43:09,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:09,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 02:43:09,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 02:43:09,387 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)] === [2024-11-17 02:43:09,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1025058789, now seen corresponding path program 1 times [2024-11-17 02:43:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246431445] [2024-11-17 02:43:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:09,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246431445] [2024-11-17 02:43:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246431445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:09,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:09,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485512035] [2024-11-17 02:43:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:09,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 02:43:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 02:43:09,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 02:43:09,613 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) [2024-11-17 02:43:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:13,164 INFO L93 Difference]: Finished difference Result 7114 states and 8694 transitions. [2024-11-17 02:43:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 02:43:13,164 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 [2024-11-17 02:43:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:13,183 INFO L225 Difference]: With dead ends: 7114 [2024-11-17 02:43:13,183 INFO L226 Difference]: Without dead ends: 7114 [2024-11-17 02:43:13,184 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 [2024-11-17 02:43:13,184 INFO L432 NwaCegarLoop]: 2512 mSDtfsCounter, 9699 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.4s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:13,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9702 Valid, 5708 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4357 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-17 02:43:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2024-11-17 02:43:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4844. [2024-11-17 02:43:13,258 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) [2024-11-17 02:43:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 7176 transitions. [2024-11-17 02:43:13,270 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 7176 transitions. Word has length 8 [2024-11-17 02:43:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:13,270 INFO L471 AbstractCegarLoop]: Abstraction has 4844 states and 7176 transitions. [2024-11-17 02:43:13,270 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) [2024-11-17 02:43:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 7176 transitions. [2024-11-17 02:43:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 02:43:13,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:13,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 02:43:13,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 02:43:13,271 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)] === [2024-11-17 02:43:13,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048008, now seen corresponding path program 1 times [2024-11-17 02:43:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:13,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409089437] [2024-11-17 02:43:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:13,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409089437] [2024-11-17 02:43:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409089437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:13,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 02:43:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718895841] [2024-11-17 02:43:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:13,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:13,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:13,333 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) [2024-11-17 02:43:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:14,508 INFO L93 Difference]: Finished difference Result 5953 states and 8467 transitions. [2024-11-17 02:43:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:14,508 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 [2024-11-17 02:43:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:14,523 INFO L225 Difference]: With dead ends: 5953 [2024-11-17 02:43:14,524 INFO L226 Difference]: Without dead ends: 5953 [2024-11-17 02:43:14,524 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 [2024-11-17 02:43:14,525 INFO L432 NwaCegarLoop]: 3399 mSDtfsCounter, 2883 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:14,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 4518 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-17 02:43:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2024-11-17 02:43:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 4752. [2024-11-17 02:43:14,584 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) [2024-11-17 02:43:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6961 transitions. [2024-11-17 02:43:14,592 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6961 transitions. Word has length 9 [2024-11-17 02:43:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:14,592 INFO L471 AbstractCegarLoop]: Abstraction has 4752 states and 6961 transitions. [2024-11-17 02:43:14,592 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) [2024-11-17 02:43:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6961 transitions. [2024-11-17 02:43:14,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 02:43:14,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:14,593 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 02:43:14,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 02:43:14,593 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)] === [2024-11-17 02:43:14,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048007, now seen corresponding path program 1 times [2024-11-17 02:43:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347784355] [2024-11-17 02:43:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:14,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:14,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347784355] [2024-11-17 02:43:14,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347784355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:14,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:14,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 02:43:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870990307] [2024-11-17 02:43:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:14,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:14,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:14,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:14,663 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) [2024-11-17 02:43:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:16,195 INFO L93 Difference]: Finished difference Result 7560 states and 10987 transitions. [2024-11-17 02:43:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:16,195 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 [2024-11-17 02:43:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:16,214 INFO L225 Difference]: With dead ends: 7560 [2024-11-17 02:43:16,214 INFO L226 Difference]: Without dead ends: 7560 [2024-11-17 02:43:16,214 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 [2024-11-17 02:43:16,215 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 [2024-11-17 02:43:16,215 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] [2024-11-17 02:43:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2024-11-17 02:43:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 5302. [2024-11-17 02:43:16,280 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) [2024-11-17 02:43:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7923 transitions. [2024-11-17 02:43:16,288 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7923 transitions. Word has length 9 [2024-11-17 02:43:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:16,288 INFO L471 AbstractCegarLoop]: Abstraction has 5302 states and 7923 transitions. [2024-11-17 02:43:16,288 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) [2024-11-17 02:43:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7923 transitions. [2024-11-17 02:43:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-17 02:43:16,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:16,289 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 02:43:16,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 02:43:16,289 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)] === [2024-11-17 02:43:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -11078433, now seen corresponding path program 1 times [2024-11-17 02:43:16,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:16,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214703891] [2024-11-17 02:43:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:16,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:16,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214703891] [2024-11-17 02:43:16,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214703891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:16,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:16,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:16,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240848493] [2024-11-17 02:43:16,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:16,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:16,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:16,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:16,359 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) [2024-11-17 02:43:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:16,771 INFO L93 Difference]: Finished difference Result 7337 states and 10735 transitions. [2024-11-17 02:43:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 02:43:16,771 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 [2024-11-17 02:43:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:16,783 INFO L225 Difference]: With dead ends: 7337 [2024-11-17 02:43:16,783 INFO L226 Difference]: Without dead ends: 7337 [2024-11-17 02:43:16,783 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 [2024-11-17 02:43:16,784 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 [2024-11-17 02:43:16,784 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] [2024-11-17 02:43:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2024-11-17 02:43:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 5305. [2024-11-17 02:43:16,846 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) [2024-11-17 02:43:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 7926 transitions. [2024-11-17 02:43:16,853 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 7926 transitions. Word has length 13 [2024-11-17 02:43:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 5305 states and 7926 transitions. [2024-11-17 02:43:16,854 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) [2024-11-17 02:43:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 7926 transitions. [2024-11-17 02:43:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 02:43:16,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:16,855 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] [2024-11-17 02:43:16,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 02:43:16,855 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)] === [2024-11-17 02:43:16,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 260256747, now seen corresponding path program 1 times [2024-11-17 02:43:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666404301] [2024-11-17 02:43:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:16,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666404301] [2024-11-17 02:43:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666404301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 02:43:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82292266] [2024-11-17 02:43:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:16,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:16,899 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) [2024-11-17 02:43:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:18,263 INFO L93 Difference]: Finished difference Result 5380 states and 8032 transitions. [2024-11-17 02:43:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 02:43:18,264 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 [2024-11-17 02:43:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:18,272 INFO L225 Difference]: With dead ends: 5380 [2024-11-17 02:43:18,272 INFO L226 Difference]: Without dead ends: 5380 [2024-11-17 02:43:18,273 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 [2024-11-17 02:43:18,273 INFO L432 NwaCegarLoop]: 1948 mSDtfsCounter, 3146 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:18,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 3781 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-17 02:43:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2024-11-17 02:43:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5282. [2024-11-17 02:43:18,320 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) [2024-11-17 02:43:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7880 transitions. [2024-11-17 02:43:18,327 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7880 transitions. Word has length 22 [2024-11-17 02:43:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:18,327 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 7880 transitions. [2024-11-17 02:43:18,327 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) [2024-11-17 02:43:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7880 transitions. [2024-11-17 02:43:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 02:43:18,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:18,328 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] [2024-11-17 02:43:18,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 02:43:18,328 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)] === [2024-11-17 02:43:18,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash 260256748, now seen corresponding path program 1 times [2024-11-17 02:43:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250101449] [2024-11-17 02:43:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:18,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250101449] [2024-11-17 02:43:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250101449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:18,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 02:43:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194117518] [2024-11-17 02:43:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:18,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:18,389 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) [2024-11-17 02:43:18,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:18,560 INFO L93 Difference]: Finished difference Result 5144 states and 7674 transitions. [2024-11-17 02:43:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:18,560 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 [2024-11-17 02:43:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:18,570 INFO L225 Difference]: With dead ends: 5144 [2024-11-17 02:43:18,570 INFO L226 Difference]: Without dead ends: 5144 [2024-11-17 02:43:18,570 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 [2024-11-17 02:43:18,572 INFO L432 NwaCegarLoop]: 2789 mSDtfsCounter, 61 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:18,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5524 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 02:43:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2024-11-17 02:43:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5144. [2024-11-17 02:43:18,621 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) [2024-11-17 02:43:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7674 transitions. [2024-11-17 02:43:18,630 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7674 transitions. Word has length 22 [2024-11-17 02:43:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:18,631 INFO L471 AbstractCegarLoop]: Abstraction has 5144 states and 7674 transitions. [2024-11-17 02:43:18,631 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) [2024-11-17 02:43:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7674 transitions. [2024-11-17 02:43:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 02:43:18,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:18,631 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] [2024-11-17 02:43:18,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 02:43:18,631 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)] === [2024-11-17 02:43:18,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2008294252, now seen corresponding path program 1 times [2024-11-17 02:43:18,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:18,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982405678] [2024-11-17 02:43:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982405678] [2024-11-17 02:43:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982405678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566612958] [2024-11-17 02:43:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:18,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:18,705 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) [2024-11-17 02:43:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:19,111 INFO L93 Difference]: Finished difference Result 7078 states and 10356 transitions. [2024-11-17 02:43:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 02:43:19,111 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 [2024-11-17 02:43:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:19,121 INFO L225 Difference]: With dead ends: 7078 [2024-11-17 02:43:19,121 INFO L226 Difference]: Without dead ends: 7078 [2024-11-17 02:43:19,121 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 [2024-11-17 02:43:19,123 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:19,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 8703 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 02:43:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7078 states. [2024-11-17 02:43:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7078 to 5154. [2024-11-17 02:43:19,170 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) [2024-11-17 02:43:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7684 transitions. [2024-11-17 02:43:19,176 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7684 transitions. Word has length 22 [2024-11-17 02:43:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:19,177 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 7684 transitions. [2024-11-17 02:43:19,177 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) [2024-11-17 02:43:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7684 transitions. [2024-11-17 02:43:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-17 02:43:19,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:19,177 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] [2024-11-17 02:43:19,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 02:43:19,178 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)] === [2024-11-17 02:43:19,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 998586895, now seen corresponding path program 1 times [2024-11-17 02:43:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:19,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172358350] [2024-11-17 02:43:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:19,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:19,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172358350] [2024-11-17 02:43:19,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172358350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:19,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:19,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:19,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554097991] [2024-11-17 02:43:19,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:19,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:19,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:19,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:19,237 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) [2024-11-17 02:43:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:19,461 INFO L93 Difference]: Finished difference Result 5131 states and 7640 transitions. [2024-11-17 02:43:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 02:43:19,462 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 [2024-11-17 02:43:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:19,469 INFO L225 Difference]: With dead ends: 5131 [2024-11-17 02:43:19,469 INFO L226 Difference]: Without dead ends: 5131 [2024-11-17 02:43:19,470 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 [2024-11-17 02:43:19,470 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 [2024-11-17 02:43:19,470 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] [2024-11-17 02:43:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-11-17 02:43:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 5131. [2024-11-17 02:43:19,511 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) [2024-11-17 02:43:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 7640 transitions. [2024-11-17 02:43:19,517 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 7640 transitions. Word has length 24 [2024-11-17 02:43:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:19,518 INFO L471 AbstractCegarLoop]: Abstraction has 5131 states and 7640 transitions. [2024-11-17 02:43:19,518 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) [2024-11-17 02:43:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 7640 transitions. [2024-11-17 02:43:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-17 02:43:19,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:19,519 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] [2024-11-17 02:43:19,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 02:43:19,519 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)] === [2024-11-17 02:43:19,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 344062853, now seen corresponding path program 1 times [2024-11-17 02:43:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908625370] [2024-11-17 02:43:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:19,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:19,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:19,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908625370] [2024-11-17 02:43:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908625370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:19,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 02:43:19,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632143646] [2024-11-17 02:43:19,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:19,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:19,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:19,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:19,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:19,643 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) [2024-11-17 02:43:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:21,551 INFO L93 Difference]: Finished difference Result 7483 states and 10848 transitions. [2024-11-17 02:43:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 02:43:21,552 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 [2024-11-17 02:43:21,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:21,565 INFO L225 Difference]: With dead ends: 7483 [2024-11-17 02:43:21,565 INFO L226 Difference]: Without dead ends: 7483 [2024-11-17 02:43:21,566 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 [2024-11-17 02:43:21,567 INFO L432 NwaCegarLoop]: 2227 mSDtfsCounter, 2354 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:21,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 5748 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-17 02:43:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7483 states. [2024-11-17 02:43:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7483 to 5127. [2024-11-17 02:43:21,628 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) [2024-11-17 02:43:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7632 transitions. [2024-11-17 02:43:21,636 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7632 transitions. Word has length 38 [2024-11-17 02:43:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:21,637 INFO L471 AbstractCegarLoop]: Abstraction has 5127 states and 7632 transitions. [2024-11-17 02:43:21,637 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) [2024-11-17 02:43:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7632 transitions. [2024-11-17 02:43:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 02:43:21,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:21,640 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] [2024-11-17 02:43:21,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 02:43:21,640 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)] === [2024-11-17 02:43:21,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1148214010, now seen corresponding path program 1 times [2024-11-17 02:43:21,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:21,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960142164] [2024-11-17 02:43:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:21,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:21,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960142164] [2024-11-17 02:43:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960142164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296303101] [2024-11-17 02:43:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:21,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 02:43:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 02:43:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 02:43:21,764 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) [2024-11-17 02:43:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:21,999 INFO L93 Difference]: Finished difference Result 5115 states and 7612 transitions. [2024-11-17 02:43:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 02:43:22,000 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 [2024-11-17 02:43:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:22,007 INFO L225 Difference]: With dead ends: 5115 [2024-11-17 02:43:22,007 INFO L226 Difference]: Without dead ends: 5115 [2024-11-17 02:43:22,008 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 [2024-11-17 02:43:22,008 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:22,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8215 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 02:43:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2024-11-17 02:43:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5115. [2024-11-17 02:43:22,047 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) [2024-11-17 02:43:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7612 transitions. [2024-11-17 02:43:22,052 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7612 transitions. Word has length 73 [2024-11-17 02:43:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:22,053 INFO L471 AbstractCegarLoop]: Abstraction has 5115 states and 7612 transitions. [2024-11-17 02:43:22,053 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) [2024-11-17 02:43:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7612 transitions. [2024-11-17 02:43:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-17 02:43:22,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:22,054 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] [2024-11-17 02:43:22,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 02:43:22,054 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)] === [2024-11-17 02:43:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2044010690, now seen corresponding path program 1 times [2024-11-17 02:43:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200695465] [2024-11-17 02:43:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:22,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:22,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200695465] [2024-11-17 02:43:22,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200695465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:22,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:22,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 02:43:22,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355744793] [2024-11-17 02:43:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:22,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 02:43:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 02:43:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 02:43:22,140 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) [2024-11-17 02:43:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:22,410 INFO L93 Difference]: Finished difference Result 6648 states and 9820 transitions. [2024-11-17 02:43:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 02:43:22,410 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 [2024-11-17 02:43:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:22,420 INFO L225 Difference]: With dead ends: 6648 [2024-11-17 02:43:22,421 INFO L226 Difference]: Without dead ends: 6648 [2024-11-17 02:43:22,421 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 [2024-11-17 02:43:22,422 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:22,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5468 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 02:43:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2024-11-17 02:43:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 5984. [2024-11-17 02:43:22,497 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) [2024-11-17 02:43:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 9054 transitions. [2024-11-17 02:43:22,505 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 9054 transitions. Word has length 81 [2024-11-17 02:43:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:22,505 INFO L471 AbstractCegarLoop]: Abstraction has 5984 states and 9054 transitions. [2024-11-17 02:43:22,506 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) [2024-11-17 02:43:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 9054 transitions. [2024-11-17 02:43:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-17 02:43:22,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:22,506 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] [2024-11-17 02:43:22,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 02:43:22,507 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)] === [2024-11-17 02:43:22,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash 924536959, now seen corresponding path program 1 times [2024-11-17 02:43:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124547186] [2024-11-17 02:43:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:22,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124547186] [2024-11-17 02:43:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124547186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:22,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 02:43:22,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993962361] [2024-11-17 02:43:22,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:22,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 02:43:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 02:43:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-17 02:43:22,856 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) [2024-11-17 02:43:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:24,403 INFO L93 Difference]: Finished difference Result 5900 states and 8855 transitions. [2024-11-17 02:43:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 02:43:24,404 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 [2024-11-17 02:43:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:24,422 INFO L225 Difference]: With dead ends: 5900 [2024-11-17 02:43:24,422 INFO L226 Difference]: Without dead ends: 5900 [2024-11-17 02:43:24,422 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 [2024-11-17 02:43:24,423 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 2701 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:24,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 2969 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-17 02:43:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2024-11-17 02:43:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5340. [2024-11-17 02:43:24,510 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) [2024-11-17 02:43:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 7873 transitions. [2024-11-17 02:43:24,518 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 7873 transitions. Word has length 84 [2024-11-17 02:43:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:24,519 INFO L471 AbstractCegarLoop]: Abstraction has 5340 states and 7873 transitions. [2024-11-17 02:43:24,519 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) [2024-11-17 02:43:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 7873 transitions. [2024-11-17 02:43:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-17 02:43:24,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:24,520 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] [2024-11-17 02:43:24,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 02:43:24,520 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)] === [2024-11-17 02:43:24,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 137439817, now seen corresponding path program 1 times [2024-11-17 02:43:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912634051] [2024-11-17 02:43:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:24,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:24,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912634051] [2024-11-17 02:43:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912634051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:24,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:24,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462550864] [2024-11-17 02:43:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:24,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 02:43:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 02:43:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 02:43:24,718 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) [2024-11-17 02:43:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:26,155 INFO L93 Difference]: Finished difference Result 5339 states and 7871 transitions. [2024-11-17 02:43:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 02:43:26,155 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 [2024-11-17 02:43:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:26,162 INFO L225 Difference]: With dead ends: 5339 [2024-11-17 02:43:26,163 INFO L226 Difference]: Without dead ends: 5339 [2024-11-17 02:43:26,163 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 [2024-11-17 02:43:26,163 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 2 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2024-11-17 02:43:26,164 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] [2024-11-17 02:43:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2024-11-17 02:43:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 5339. [2024-11-17 02:43:26,203 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) [2024-11-17 02:43:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 7871 transitions. [2024-11-17 02:43:26,209 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 7871 transitions. Word has length 89 [2024-11-17 02:43:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:26,210 INFO L471 AbstractCegarLoop]: Abstraction has 5339 states and 7871 transitions. [2024-11-17 02:43:26,210 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) [2024-11-17 02:43:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 7871 transitions. [2024-11-17 02:43:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-17 02:43:26,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:26,211 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] [2024-11-17 02:43:26,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 02:43:26,211 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)] === [2024-11-17 02:43:26,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash 137439818, now seen corresponding path program 1 times [2024-11-17 02:43:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322472471] [2024-11-17 02:43:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322472471] [2024-11-17 02:43:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322472471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:26,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:26,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 02:43:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425057805] [2024-11-17 02:43:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:26,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 02:43:26,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:26,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 02:43:26,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 02:43:26,607 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) [2024-11-17 02:43:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:28,224 INFO L93 Difference]: Finished difference Result 5338 states and 7869 transitions. [2024-11-17 02:43:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 02:43:28,225 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 [2024-11-17 02:43:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:28,230 INFO L225 Difference]: With dead ends: 5338 [2024-11-17 02:43:28,231 INFO L226 Difference]: Without dead ends: 5338 [2024-11-17 02:43:28,231 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 [2024-11-17 02:43:28,231 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 1 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:28,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8193 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-17 02:43:28,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2024-11-17 02:43:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5338. [2024-11-17 02:43:28,271 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) [2024-11-17 02:43:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 7869 transitions. [2024-11-17 02:43:28,276 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 7869 transitions. Word has length 89 [2024-11-17 02:43:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:28,277 INFO L471 AbstractCegarLoop]: Abstraction has 5338 states and 7869 transitions. [2024-11-17 02:43:28,277 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) [2024-11-17 02:43:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 7869 transitions. [2024-11-17 02:43:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-17 02:43:28,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:28,278 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] [2024-11-17 02:43:28,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 02:43:28,278 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)] === [2024-11-17 02:43:28,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 815649094, now seen corresponding path program 1 times [2024-11-17 02:43:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527254230] [2024-11-17 02:43:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:28,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:28,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527254230] [2024-11-17 02:43:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527254230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 02:43:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756710992] [2024-11-17 02:43:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:28,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 02:43:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 02:43:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 02:43:28,527 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) [2024-11-17 02:43:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:30,527 INFO L93 Difference]: Finished difference Result 5356 states and 7904 transitions. [2024-11-17 02:43:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 02:43:30,528 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 [2024-11-17 02:43:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:30,543 INFO L225 Difference]: With dead ends: 5356 [2024-11-17 02:43:30,543 INFO L226 Difference]: Without dead ends: 5356 [2024-11-17 02:43:30,544 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 [2024-11-17 02:43:30,544 INFO L432 NwaCegarLoop]: 2640 mSDtfsCounter, 31 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:30,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12735 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-17 02:43:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2024-11-17 02:43:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5347. [2024-11-17 02:43:30,609 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) [2024-11-17 02:43:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7894 transitions. [2024-11-17 02:43:30,617 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7894 transitions. Word has length 97 [2024-11-17 02:43:30,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:30,617 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7894 transitions. [2024-11-17 02:43:30,617 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) [2024-11-17 02:43:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7894 transitions. [2024-11-17 02:43:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-17 02:43:30,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:30,618 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] [2024-11-17 02:43:30,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 02:43:30,619 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)] === [2024-11-17 02:43:30,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash 815649095, now seen corresponding path program 1 times [2024-11-17 02:43:30,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:30,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245308358] [2024-11-17 02:43:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:31,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245308358] [2024-11-17 02:43:31,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245308358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:31,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:31,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 02:43:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80072100] [2024-11-17 02:43:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:31,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 02:43:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 02:43:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 02:43:31,050 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) [2024-11-17 02:43:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:33,140 INFO L93 Difference]: Finished difference Result 5347 states and 7892 transitions. [2024-11-17 02:43:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 02:43:33,141 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 [2024-11-17 02:43:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:33,148 INFO L225 Difference]: With dead ends: 5347 [2024-11-17 02:43:33,148 INFO L226 Difference]: Without dead ends: 5347 [2024-11-17 02:43:33,149 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 [2024-11-17 02:43:33,149 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, 2.0s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:33,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12746 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-17 02:43:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2024-11-17 02:43:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5347. [2024-11-17 02:43:33,207 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) [2024-11-17 02:43:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7892 transitions. [2024-11-17 02:43:33,217 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7892 transitions. Word has length 97 [2024-11-17 02:43:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:33,218 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7892 transitions. [2024-11-17 02:43:33,218 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) [2024-11-17 02:43:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7892 transitions. [2024-11-17 02:43:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-17 02:43:33,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:33,219 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] [2024-11-17 02:43:33,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 02:43:33,219 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)] === [2024-11-17 02:43:33,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash -353983941, now seen corresponding path program 1 times [2024-11-17 02:43:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:33,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913675193] [2024-11-17 02:43:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:33,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:33,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913675193] [2024-11-17 02:43:33,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913675193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090560620] [2024-11-17 02:43:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:33,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:43:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:43:33,640 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) [2024-11-17 02:43:33,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 02:43:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:33,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 02:43:33,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 02:43:33,990 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-17 02:43:33,991 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 [2024-11-17 02:43:34,013 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 [2024-11-17 02:43:34,076 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 [2024-11-17 02:43:34,216 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:43:34,217 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 [2024-11-17 02:43:34,252 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 [2024-11-17 02:43:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:34,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 02:43:34,309 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 [2024-11-17 02:43:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090560620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:34,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 02:43:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2024-11-17 02:43:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892874995] [2024-11-17 02:43:34,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 02:43:34,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 02:43:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:34,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 02:43:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=292, Unknown=1, NotChecked=34, Total=380 [2024-11-17 02:43:34,314 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) [2024-11-17 02:43:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:40,557 INFO L93 Difference]: Finished difference Result 5354 states and 7898 transitions. [2024-11-17 02:43:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 02:43:40,557 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 [2024-11-17 02:43:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:40,563 INFO L225 Difference]: With dead ends: 5354 [2024-11-17 02:43:40,563 INFO L226 Difference]: Without dead ends: 5354 [2024-11-17 02:43:40,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=469, Unknown=1, NotChecked=44, Total=600 [2024-11-17 02:43:40,564 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2728 mSDsluCounter, 21613 mSDsCounter, 0 mSdLazyCounter, 12812 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 6.0s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:40,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 23436 Invalid, 12839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 12812 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-17 02:43:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2024-11-17 02:43:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5351. [2024-11-17 02:43:40,595 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) [2024-11-17 02:43:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7883 transitions. [2024-11-17 02:43:40,600 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7883 transitions. Word has length 98 [2024-11-17 02:43:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:40,601 INFO L471 AbstractCegarLoop]: Abstraction has 5351 states and 7883 transitions. [2024-11-17 02:43:40,601 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) [2024-11-17 02:43:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7883 transitions. [2024-11-17 02:43:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-17 02:43:40,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:40,602 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] [2024-11-17 02:43:40,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 02:43:40,802 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 [2024-11-17 02:43:40,803 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)] === [2024-11-17 02:43:40,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -353983940, now seen corresponding path program 1 times [2024-11-17 02:43:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368022321] [2024-11-17 02:43:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:41,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368022321] [2024-11-17 02:43:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368022321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103830034] [2024-11-17 02:43:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:41,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:43:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:43:41,481 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) [2024-11-17 02:43:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 02:43:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:41,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 02:43:41,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 02:43:41,788 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 02:43:41,788 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 [2024-11-17 02:43:41,792 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 [2024-11-17 02:43:41,800 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 [2024-11-17 02:43:41,804 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 [2024-11-17 02:43:41,847 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 [2024-11-17 02:43:41,850 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 [2024-11-17 02:43:41,965 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:43:41,966 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 [2024-11-17 02:43:41,968 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 [2024-11-17 02:43:42,008 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 [2024-11-17 02:43:42,011 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 [2024-11-17 02:43:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:42,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 02:43:42,079 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 [2024-11-17 02:43:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103830034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:42,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 02:43:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-17 02:43:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768339272] [2024-11-17 02:43:42,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 02:43:42,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 02:43:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 02:43:42,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-17 02:43:42,082 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) [2024-11-17 02:43:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:46,777 INFO L93 Difference]: Finished difference Result 5353 states and 7896 transitions. [2024-11-17 02:43:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 02:43:46,777 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 [2024-11-17 02:43:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:46,783 INFO L225 Difference]: With dead ends: 5353 [2024-11-17 02:43:46,786 INFO L226 Difference]: Without dead ends: 5353 [2024-11-17 02:43:46,786 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 [2024-11-17 02:43:46,787 INFO L432 NwaCegarLoop]: 1829 mSDtfsCounter, 2723 mSDsluCounter, 11119 mSDsCounter, 0 mSdLazyCounter, 9334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.5s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:46,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 12948 Invalid, 9378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 9334 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-17 02:43:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2024-11-17 02:43:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5341. [2024-11-17 02:43:46,818 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) [2024-11-17 02:43:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 7870 transitions. [2024-11-17 02:43:46,823 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 7870 transitions. Word has length 98 [2024-11-17 02:43:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:46,823 INFO L471 AbstractCegarLoop]: Abstraction has 5341 states and 7870 transitions. [2024-11-17 02:43:46,824 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) [2024-11-17 02:43:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 7870 transitions. [2024-11-17 02:43:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-17 02:43:46,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:46,824 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] [2024-11-17 02:43:46,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 02:43:47,025 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 [2024-11-17 02:43:47,026 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)] === [2024-11-17 02:43:47,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821520, now seen corresponding path program 1 times [2024-11-17 02:43:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207204672] [2024-11-17 02:43:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:47,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207204672] [2024-11-17 02:43:47,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207204672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:47,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:47,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-17 02:43:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461193592] [2024-11-17 02:43:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:47,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 02:43:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 02:43:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-17 02:43:47,432 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) [2024-11-17 02:43:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:51,161 INFO L93 Difference]: Finished difference Result 5360 states and 7904 transitions. [2024-11-17 02:43:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 02:43:51,161 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 [2024-11-17 02:43:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:51,168 INFO L225 Difference]: With dead ends: 5360 [2024-11-17 02:43:51,168 INFO L226 Difference]: Without dead ends: 5360 [2024-11-17 02:43:51,169 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 [2024-11-17 02:43:51,169 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2734 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 8871 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 16234 SdHoareTripleChecker+Invalid, 8895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 8871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:51,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 16234 Invalid, 8895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 8871 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-17 02:43:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2024-11-17 02:43:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 5356. [2024-11-17 02:43:51,204 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) [2024-11-17 02:43:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7889 transitions. [2024-11-17 02:43:51,209 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7889 transitions. Word has length 100 [2024-11-17 02:43:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:51,210 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7889 transitions. [2024-11-17 02:43:51,210 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) [2024-11-17 02:43:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7889 transitions. [2024-11-17 02:43:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-17 02:43:51,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:51,211 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] [2024-11-17 02:43:51,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 02:43:51,211 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)] === [2024-11-17 02:43:51,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:51,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821519, now seen corresponding path program 1 times [2024-11-17 02:43:51,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:51,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652292360] [2024-11-17 02:43:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:51,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:51,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:51,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652292360] [2024-11-17 02:43:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652292360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:43:51,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:43:51,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-17 02:43:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843950294] [2024-11-17 02:43:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:43:51,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 02:43:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 02:43:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-17 02:43:51,755 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) [2024-11-17 02:43:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:43:56,773 INFO L93 Difference]: Finished difference Result 5359 states and 7902 transitions. [2024-11-17 02:43:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 02:43:56,775 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 [2024-11-17 02:43:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:43:56,780 INFO L225 Difference]: With dead ends: 5359 [2024-11-17 02:43:56,781 INFO L226 Difference]: Without dead ends: 5359 [2024-11-17 02:43:56,781 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 [2024-11-17 02:43:56,785 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, 4.8s IncrementalHoareTripleChecker+Time [2024-11-17 02:43:56,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 16193 Invalid, 11592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 11570 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-17 02:43:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2024-11-17 02:43:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5356. [2024-11-17 02:43:56,825 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) [2024-11-17 02:43:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7887 transitions. [2024-11-17 02:43:56,830 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7887 transitions. Word has length 100 [2024-11-17 02:43:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:43:56,831 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7887 transitions. [2024-11-17 02:43:56,831 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) [2024-11-17 02:43:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7887 transitions. [2024-11-17 02:43:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-17 02:43:56,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:43:56,832 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] [2024-11-17 02:43:56,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 02:43:56,832 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)] === [2024-11-17 02:43:56,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:43:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894757, now seen corresponding path program 1 times [2024-11-17 02:43:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:43:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394584580] [2024-11-17 02:43:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:43:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:57,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:43:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:57,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:43:57,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394584580] [2024-11-17 02:43:57,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394584580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:57,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963568501] [2024-11-17 02:43:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:43:57,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:43:57,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:43:57,243 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) [2024-11-17 02:43:57,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 02:43:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:43:57,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 02:43:57,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 02:43:57,578 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-17 02:43:57,578 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 [2024-11-17 02:43:57,606 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 [2024-11-17 02:43:57,661 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 [2024-11-17 02:43:57,768 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:43:57,770 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 [2024-11-17 02:43:57,842 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:43:57,842 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 [2024-11-17 02:43:57,857 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 [2024-11-17 02:43:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:43:57,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 02:43:57,948 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 [2024-11-17 02:43:58,002 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 [2024-11-17 02:43:58,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963568501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:43:58,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 02:43:58,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-17 02:43:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354070099] [2024-11-17 02:43:58,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 02:43:58,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 02:43:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:43:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 02:43:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=425, Unknown=11, NotChecked=86, Total=600 [2024-11-17 02:43:58,005 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) [2024-11-17 02:44:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:44:04,956 INFO L93 Difference]: Finished difference Result 5358 states and 7900 transitions. [2024-11-17 02:44:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 02:44:04,957 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 [2024-11-17 02:44:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:44:04,964 INFO L225 Difference]: With dead ends: 5358 [2024-11-17 02:44:04,964 INFO L226 Difference]: Without dead ends: 5358 [2024-11-17 02:44:04,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=591, Unknown=13, NotChecked=102, Total=812 [2024-11-17 02:44:04,965 INFO L432 NwaCegarLoop]: 1822 mSDtfsCounter, 2698 mSDsluCounter, 25167 mSDsCounter, 0 mSdLazyCounter, 14779 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s 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, 6.7s IncrementalHoareTripleChecker+Time [2024-11-17 02:44:04,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 26989 Invalid, 14804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 14779 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-17 02:44:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2024-11-17 02:44:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 5355. [2024-11-17 02:44:05,056 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) [2024-11-17 02:44:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7885 transitions. [2024-11-17 02:44:05,065 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7885 transitions. Word has length 101 [2024-11-17 02:44:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:44:05,065 INFO L471 AbstractCegarLoop]: Abstraction has 5355 states and 7885 transitions. [2024-11-17 02:44:05,066 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) [2024-11-17 02:44:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7885 transitions. [2024-11-17 02:44:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-17 02:44:05,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:44:05,067 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] [2024-11-17 02:44:05,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 02:44:05,267 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 [2024-11-17 02:44:05,268 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)] === [2024-11-17 02:44:05,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:44:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894756, now seen corresponding path program 1 times [2024-11-17 02:44:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:44:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591321437] [2024-11-17 02:44:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:44:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:06,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:44:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:44:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591321437] [2024-11-17 02:44:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591321437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:44:06,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785553690] [2024-11-17 02:44:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:06,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:44:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:44:06,066 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) [2024-11-17 02:44:06,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 02:44:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:06,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 02:44:06,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 02:44:06,382 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 02:44:06,382 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 [2024-11-17 02:44:06,387 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 [2024-11-17 02:44:06,396 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 [2024-11-17 02:44:06,399 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 [2024-11-17 02:44:06,447 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 [2024-11-17 02:44:06,450 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 [2024-11-17 02:44:06,524 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:44:06,525 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 [2024-11-17 02:44:06,531 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 [2024-11-17 02:44:06,589 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:44:06,589 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 [2024-11-17 02:44:06,593 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 [2024-11-17 02:44:06,609 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 [2024-11-17 02:44:06,612 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 [2024-11-17 02:44:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:06,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 02:44:06,659 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1271 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-17 02:44:06,667 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1271 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4)))))) is different from false [2024-11-17 02:44:06,705 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1277 (Array Int Int)) (v_ArrVal_1276 (Array Int Int)) (v_ArrVal_1271 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1276) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1277) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1277 (Array Int Int)) (v_ArrVal_1276 (Array Int Int)) (v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1277))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1276) .cse1 v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-17 02:44:06,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785553690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:44:06,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 02:44:06,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2024-11-17 02:44:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769601297] [2024-11-17 02:44:06,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 02:44:06,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 02:44:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:44:06,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 02:44:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=320, Unknown=3, NotChecked=114, Total=506 [2024-11-17 02:44:06,709 INFO L87 Difference]: Start difference. First operand 5355 states and 7885 transitions. Second operand has 18 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 02:44:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:44:10,963 INFO L93 Difference]: Finished difference Result 5357 states and 7898 transitions. [2024-11-17 02:44:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 02:44:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 101 [2024-11-17 02:44:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:44:10,970 INFO L225 Difference]: With dead ends: 5357 [2024-11-17 02:44:10,970 INFO L226 Difference]: Without dead ends: 5357 [2024-11-17 02:44:10,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=546, Unknown=3, NotChecked=150, Total=812 [2024-11-17 02:44:10,971 INFO L432 NwaCegarLoop]: 1828 mSDtfsCounter, 2741 mSDsluCounter, 11132 mSDsCounter, 0 mSdLazyCounter, 9396 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 12960 SdHoareTripleChecker+Invalid, 9456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 9396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-17 02:44:10,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2759 Valid, 12960 Invalid, 9456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 9396 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-17 02:44:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2024-11-17 02:44:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5339. [2024-11-17 02:44:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 4598 states have (on average 1.6981296215745976) internal successors, (7808), 5309 states have internal predecessors, (7808), 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) [2024-11-17 02:44:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 7866 transitions. [2024-11-17 02:44:11,021 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 7866 transitions. Word has length 101 [2024-11-17 02:44:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:44:11,021 INFO L471 AbstractCegarLoop]: Abstraction has 5339 states and 7866 transitions. [2024-11-17 02:44:11,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 8.133333333333333) internal successors, (122), 17 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 02:44:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 7866 transitions. [2024-11-17 02:44:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-17 02:44:11,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:44:11,022 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, 1, 1] [2024-11-17 02:44:11,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 02:44:11,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:44:11,223 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-17 02:44:11,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:44:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1615415841, now seen corresponding path program 1 times [2024-11-17 02:44:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:44:11,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179098589] [2024-11-17 02:44:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:44:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:11,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:44:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:44:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179098589] [2024-11-17 02:44:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179098589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:44:11,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:44:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-17 02:44:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172270515] [2024-11-17 02:44:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:44:11,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 02:44:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:44:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 02:44:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-17 02:44:11,724 INFO L87 Difference]: Start difference. First operand 5339 states and 7866 transitions. Second operand has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-11-17 02:44:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:44:14,943 INFO L93 Difference]: Finished difference Result 5364 states and 7906 transitions. [2024-11-17 02:44:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 02:44:14,943 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 14 states have internal predecessors, (101), 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 103 [2024-11-17 02:44:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:44:14,950 INFO L225 Difference]: With dead ends: 5364 [2024-11-17 02:44:14,950 INFO L226 Difference]: Without dead ends: 5364 [2024-11-17 02:44:14,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-17 02:44:14,951 INFO L432 NwaCegarLoop]: 1822 mSDtfsCounter, 2712 mSDsluCounter, 14381 mSDsCounter, 0 mSdLazyCounter, 8874 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 16203 SdHoareTripleChecker+Invalid, 8897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-17 02:44:14,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 16203 Invalid, 8897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 8874 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-17 02:44:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2024-11-17 02:44:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 5360. [2024-11-17 02:44:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4618 states have (on average 1.6957557384148982) internal successors, (7831), 5328 states have internal predecessors, (7831), 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) [2024-11-17 02:44:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 7891 transitions. [2024-11-17 02:44:15,033 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 7891 transitions. Word has length 103 [2024-11-17 02:44:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:44:15,034 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 7891 transitions. [2024-11-17 02:44:15,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-11-17 02:44:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 7891 transitions. [2024-11-17 02:44:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-17 02:44:15,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:44:15,038 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, 1, 1] [2024-11-17 02:44:15,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-17 02:44:15,038 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr868REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-17 02:44:15,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:44:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1615415840, now seen corresponding path program 1 times [2024-11-17 02:44:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:44:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631807616] [2024-11-17 02:44:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:44:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:15,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:44:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:15,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:44:15,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631807616] [2024-11-17 02:44:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631807616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 02:44:15,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 02:44:15,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-17 02:44:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179369847] [2024-11-17 02:44:15,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 02:44:15,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 02:44:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:44:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 02:44:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-17 02:44:15,659 INFO L87 Difference]: Start difference. First operand 5360 states and 7891 transitions. Second operand has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2024-11-17 02:44:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 02:44:20,392 INFO L93 Difference]: Finished difference Result 5363 states and 7904 transitions. [2024-11-17 02:44:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 02:44:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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 103 [2024-11-17 02:44:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 02:44:20,399 INFO L225 Difference]: With dead ends: 5363 [2024-11-17 02:44:20,399 INFO L226 Difference]: Without dead ends: 5363 [2024-11-17 02:44:20,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-17 02:44:20,399 INFO L432 NwaCegarLoop]: 1829 mSDtfsCounter, 2727 mSDsluCounter, 12597 mSDsCounter, 0 mSdLazyCounter, 10624 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 14426 SdHoareTripleChecker+Invalid, 10646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-17 02:44:20,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2745 Valid, 14426 Invalid, 10646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 10624 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-17 02:44:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2024-11-17 02:44:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5360. [2024-11-17 02:44:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 4618 states have (on average 1.6953226504980512) internal successors, (7829), 5328 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) [2024-11-17 02:44:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 7889 transitions. [2024-11-17 02:44:20,491 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 7889 transitions. Word has length 103 [2024-11-17 02:44:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 02:44:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 5360 states and 7889 transitions. [2024-11-17 02:44:20,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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) [2024-11-17 02:44:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 7889 transitions. [2024-11-17 02:44:20,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-17 02:44:20,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 02:44:20,492 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, 1, 1, 1] [2024-11-17 02:44:20,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-17 02:44:20,492 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-17 02:44:20,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 02:44:20,493 INFO L85 PathProgramCache]: Analyzing trace with hash 880425748, now seen corresponding path program 1 times [2024-11-17 02:44:20,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 02:44:20,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033325071] [2024-11-17 02:44:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 02:44:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:20,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-17 02:44:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 02:44:20,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033325071] [2024-11-17 02:44:20,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033325071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:44:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664478203] [2024-11-17 02:44:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 02:44:20,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 02:44:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 02:44:20,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 02:44:20,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 02:44:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 02:44:21,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 02:44:21,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 02:44:21,299 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-17 02:44:21,299 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 [2024-11-17 02:44:21,322 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 [2024-11-17 02:44:21,376 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 [2024-11-17 02:44:21,472 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:44:21,473 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 [2024-11-17 02:44:21,537 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:44:21,537 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 [2024-11-17 02:44:21,581 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-17 02:44:21,581 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 [2024-11-17 02:44:21,592 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 [2024-11-17 02:44:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 02:44:21,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 02:44:21,651 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1588 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1588) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-17 02:44:21,658 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1588 (Array Int Int)) (v_ArrVal_1587 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1587))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1588)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-17 02:44:21,663 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1588 (Array Int Int)) (v_ArrVal_1587 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1587))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1588)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-17 02:44:21,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664478203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 02:44:21,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 02:44:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-11-17 02:44:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921134904] [2024-11-17 02:44:21,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 02:44:21,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 02:44:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 02:44:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 02:44:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=545, Unknown=23, NotChecked=150, Total=812 [2024-11-17 02:44:21,715 INFO L87 Difference]: Start difference. First operand 5360 states and 7889 transitions. Second operand has 24 states, 21 states have (on average 6.428571428571429) internal successors, (135), 23 states have internal predecessors, (135), 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)