./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 09:59:01,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 09:59:01,512 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 09:59:01,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 09:59:01,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 09:59:01,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 09:59:01,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 09:59:01,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 09:59:01,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 09:59:01,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 09:59:01,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 09:59:01,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 09:59:01,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 09:59:01,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 09:59:01,555 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 09:59:01,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 09:59:01,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 09:59:01,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 09:59:01,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 09:59:01,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 09:59:01,556 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 09:59:01,557 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 09:59:01,558 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 09:59:01,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 09:59:01,558 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 09:59:01,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 09:59:01,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 09:59:01,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 09:59:01,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 09:59:01,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 09:59:01,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 09:59:01,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 09:59:01,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 09:59:01,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 09:59:01,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 09:59:01,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 09:59:01,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 09:59:01,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 09:59:01,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 09:59:01,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 09:59:01,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 09:59:01,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 09:59:01,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9885703216edf9cfe4bfb438db591a48e102e73a3e0423f90ce871c05fdf2b57 [2024-11-09 09:59:01,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 09:59:01,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 09:59:01,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 09:59:01,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 09:59:01,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 09:59:01,819 INFO L431 ainManager$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 [2024-11-09 09:59:03,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 09:59:03,649 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 09:59:03,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-1.i [2024-11-09 09:59:03,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24232907c/b9e0f6d849854fbbb0477bdabcf4e438/FLAGe5900b029 [2024-11-09 09:59:03,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24232907c/b9e0f6d849854fbbb0477bdabcf4e438 [2024-11-09 09:59:03,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 09:59:03,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 09:59:03,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 09:59:03,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 09:59:03,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 09:59:03,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:59:03" (1/1) ... [2024-11-09 09:59:03,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3fea8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:03, skipping insertion in model container [2024-11-09 09:59:03,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:59:03" (1/1) ... [2024-11-09 09:59:03,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 09:59:04,294 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,338 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,343 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,349 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,359 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,401 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,403 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,406 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,410 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,431 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,431 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,434 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,434 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,446 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,446 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,448 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,449 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,468 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,468 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,473 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,474 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,494 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,494 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,496 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,498 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:59:04,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 09:59:04,529 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 09:59:04,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 09:59:04,697 INFO L204 MainTranslator]: Completed translation [2024-11-09 09:59:04,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04 WrapperNode [2024-11-09 09:59:04,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 09:59:04,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 09:59:04,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 09:59:04,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 09:59:04,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:04,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:04,896 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3443 [2024-11-09 09:59:04,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 09:59:04,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 09:59:04,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 09:59:04,899 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 09:59:04,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:04,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:04,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,127 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2024-11-09 09:59:05,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 09:59:05,292 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 09:59:05,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 09:59:05,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 09:59:05,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (1/1) ... [2024-11-09 09:59:05,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 09:59:05,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:59:05,332 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) [2024-11-09 09:59:05,335 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 [2024-11-09 09:59:05,383 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-09 09:59:05,384 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-09 09:59:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 09:59:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 09:59:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 09:59:05,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 09:59:05,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 09:59:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 09:59:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 09:59:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 09:59:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 09:59:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 09:59:05,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 09:59:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 09:59:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 09:59:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 09:59:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 09:59:05,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 09:59:05,702 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 09:59:05,704 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 09:59:05,772 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 09:59:05,802 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 09:59:05,831 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 09:59:10,220 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-09 09:59:10,220 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 09:59:10,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 09:59:10,299 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-09 09:59:10,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:59:10 BoogieIcfgContainer [2024-11-09 09:59:10,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 09:59:10,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 09:59:10,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 09:59:10,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 09:59:10,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:59:03" (1/3) ... [2024-11-09 09:59:10,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb16f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:59:10, skipping insertion in model container [2024-11-09 09:59:10,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:59:04" (2/3) ... [2024-11-09 09:59:10,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb16f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:59:10, skipping insertion in model container [2024-11-09 09:59:10,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:59:10" (3/3) ... [2024-11-09 09:59:10,307 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-1.i [2024-11-09 09:59:10,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 09:59:10,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 986 error locations. [2024-11-09 09:59:10,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 09:59:10,428 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;@1a5d1dea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 09:59:10,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-09 09:59:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 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) [2024-11-09 09:59:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 09:59:10,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:10,454 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 09:59:10,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:10,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-09 09:59:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536649472] [2024-11-09 09:59:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536649472] [2024-11-09 09:59:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536649472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:10,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:10,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:59:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514412045] [2024-11-09 09:59:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:10,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:10,779 INFO L87 Difference]: Start difference. First operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 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) [2024-11-09 09:59:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:12,509 INFO L93 Difference]: Finished difference Result 3236 states and 3807 transitions. [2024-11-09 09:59:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:12,512 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 [2024-11-09 09:59:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:12,554 INFO L225 Difference]: With dead ends: 3236 [2024-11-09 09:59:12,555 INFO L226 Difference]: Without dead ends: 3234 [2024-11-09 09:59:12,557 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 [2024-11-09 09:59:12,563 INFO L432 NwaCegarLoop]: 2197 mSDtfsCounter, 2869 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:12,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2734 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 09:59:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2024-11-09 09:59:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 2887. [2024-11-09 09:59:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 1917 states have (on average 1.8669796557120502) internal successors, (3579), 2871 states have internal predecessors, (3579), 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) [2024-11-09 09:59:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3611 transitions. [2024-11-09 09:59:12,742 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3611 transitions. Word has length 3 [2024-11-09 09:59:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:12,743 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3611 transitions. [2024-11-09 09:59:12,743 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) [2024-11-09 09:59:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3611 transitions. [2024-11-09 09:59:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 09:59:12,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:12,744 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 09:59:12,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 09:59:12,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:12,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-09 09:59:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:12,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866736083] [2024-11-09 09:59:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866736083] [2024-11-09 09:59:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866736083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:59:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294842865] [2024-11-09 09:59:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:12,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:12,861 INFO L87 Difference]: Start difference. First operand 2887 states and 3611 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) [2024-11-09 09:59:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:14,911 INFO L93 Difference]: Finished difference Result 4956 states and 6133 transitions. [2024-11-09 09:59:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:14,911 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 [2024-11-09 09:59:14,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:14,928 INFO L225 Difference]: With dead ends: 4956 [2024-11-09 09:59:14,928 INFO L226 Difference]: Without dead ends: 4956 [2024-11-09 09:59:14,929 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 [2024-11-09 09:59:14,930 INFO L432 NwaCegarLoop]: 2399 mSDtfsCounter, 2502 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:14,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 4507 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 09:59:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2024-11-09 09:59:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4280. [2024-11-09 09:59:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3308 states have (on average 1.835247883917775) internal successors, (6071), 4257 states have internal predecessors, (6071), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6117 transitions. [2024-11-09 09:59:15,028 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6117 transitions. Word has length 3 [2024-11-09 09:59:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:15,029 INFO L471 AbstractCegarLoop]: Abstraction has 4280 states and 6117 transitions. [2024-11-09 09:59:15,029 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) [2024-11-09 09:59:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6117 transitions. [2024-11-09 09:59:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 09:59:15,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:15,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:59:15,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 09:59:15,030 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:15,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-09 09:59:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:15,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715718453] [2024-11-09 09:59:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715718453] [2024-11-09 09:59:15,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715718453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:15,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:15,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:59:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908437014] [2024-11-09 09:59:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:15,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:15,126 INFO L87 Difference]: Start difference. First operand 4280 states and 6117 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:16,283 INFO L93 Difference]: Finished difference Result 5364 states and 7438 transitions. [2024-11-09 09:59:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:16,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 09:59:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:16,301 INFO L225 Difference]: With dead ends: 5364 [2024-11-09 09:59:16,301 INFO L226 Difference]: Without dead ends: 5364 [2024-11-09 09:59:16,302 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 [2024-11-09 09:59:16,303 INFO L432 NwaCegarLoop]: 3528 mSDtfsCounter, 2840 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:16,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 4697 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 09:59:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2024-11-09 09:59:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4188. [2024-11-09 09:59:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 3308 states have (on average 1.7868802902055623) internal successors, (5911), 4165 states have internal predecessors, (5911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 5957 transitions. [2024-11-09 09:59:16,428 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 5957 transitions. Word has length 8 [2024-11-09 09:59:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:16,428 INFO L471 AbstractCegarLoop]: Abstraction has 4188 states and 5957 transitions. [2024-11-09 09:59:16,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 5957 transitions. [2024-11-09 09:59:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 09:59:16,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:16,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:59:16,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 09:59:16,430 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:16,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-09 09:59:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93058323] [2024-11-09 09:59:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:16,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93058323] [2024-11-09 09:59:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93058323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:16,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:59:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410566720] [2024-11-09 09:59:16,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:16,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:16,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:16,569 INFO L87 Difference]: Start difference. First operand 4188 states and 5957 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:18,042 INFO L93 Difference]: Finished difference Result 6923 states and 9906 transitions. [2024-11-09 09:59:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 09:59:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:18,062 INFO L225 Difference]: With dead ends: 6923 [2024-11-09 09:59:18,062 INFO L226 Difference]: Without dead ends: 6923 [2024-11-09 09:59:18,063 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 [2024-11-09 09:59:18,063 INFO L432 NwaCegarLoop]: 3882 mSDtfsCounter, 2319 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:18,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 5660 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 09:59:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2024-11-09 09:59:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 4720. [2024-11-09 09:59:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 3850 states have (on average 1.7805194805194806) internal successors, (6855), 4697 states have internal predecessors, (6855), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6901 transitions. [2024-11-09 09:59:18,200 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6901 transitions. Word has length 8 [2024-11-09 09:59:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:18,201 INFO L471 AbstractCegarLoop]: Abstraction has 4720 states and 6901 transitions. [2024-11-09 09:59:18,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6901 transitions. [2024-11-09 09:59:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 09:59:18,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:18,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:59:18,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 09:59:18,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:18,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:18,203 INFO L85 PathProgramCache]: Analyzing trace with hash -342826361, now seen corresponding path program 1 times [2024-11-09 09:59:18,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329368708] [2024-11-09 09:59:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:18,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:18,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329368708] [2024-11-09 09:59:18,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329368708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:18,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:18,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:18,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359444265] [2024-11-09 09:59:18,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:18,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:18,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:18,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:18,317 INFO L87 Difference]: Start difference. First operand 4720 states and 6901 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:18,545 INFO L93 Difference]: Finished difference Result 6557 states and 9343 transitions. [2024-11-09 09:59:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:59:18,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 09:59:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:18,578 INFO L225 Difference]: With dead ends: 6557 [2024-11-09 09:59:18,579 INFO L226 Difference]: Without dead ends: 6557 [2024-11-09 09:59:18,579 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 [2024-11-09 09:59:18,580 INFO L432 NwaCegarLoop]: 3442 mSDtfsCounter, 1449 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:18,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 9732 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:59:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2024-11-09 09:59:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4722. [2024-11-09 09:59:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3852 states have (on average 1.7801142263759087) internal successors, (6857), 4699 states have internal predecessors, (6857), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 6903 transitions. [2024-11-09 09:59:18,674 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 6903 transitions. Word has length 11 [2024-11-09 09:59:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:18,674 INFO L471 AbstractCegarLoop]: Abstraction has 4722 states and 6903 transitions. [2024-11-09 09:59:18,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 6903 transitions. [2024-11-09 09:59:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 09:59:18,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:18,675 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] [2024-11-09 09:59:18,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 09:59:18,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:18,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1711966207, now seen corresponding path program 1 times [2024-11-09 09:59:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543064469] [2024-11-09 09:59:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:18,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543064469] [2024-11-09 09:59:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543064469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:18,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72416699] [2024-11-09 09:59:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:18,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:18,817 INFO L87 Difference]: Start difference. First operand 4722 states and 6903 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:19,098 INFO L93 Difference]: Finished difference Result 6557 states and 9342 transitions. [2024-11-09 09:59:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:59:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 09:59:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:19,122 INFO L225 Difference]: With dead ends: 6557 [2024-11-09 09:59:19,125 INFO L226 Difference]: Without dead ends: 6557 [2024-11-09 09:59:19,126 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 [2024-11-09 09:59:19,127 INFO L432 NwaCegarLoop]: 3442 mSDtfsCounter, 1438 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:19,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 9732 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:59:19,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2024-11-09 09:59:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4732. [2024-11-09 09:59:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 3862 states have (on average 1.7780942516830658) internal successors, (6867), 4709 states have internal predecessors, (6867), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 6913 transitions. [2024-11-09 09:59:19,246 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 6913 transitions. Word has length 20 [2024-11-09 09:59:19,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:19,247 INFO L471 AbstractCegarLoop]: Abstraction has 4732 states and 6913 transitions. [2024-11-09 09:59:19,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 6913 transitions. [2024-11-09 09:59:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 09:59:19,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:19,248 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] [2024-11-09 09:59:19,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 09:59:19,249 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:19,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -286362849, now seen corresponding path program 1 times [2024-11-09 09:59:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543336199] [2024-11-09 09:59:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:19,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543336199] [2024-11-09 09:59:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543336199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:19,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:19,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:59:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297885723] [2024-11-09 09:59:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:19,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:19,339 INFO L87 Difference]: Start difference. First operand 4732 states and 6913 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:20,647 INFO L93 Difference]: Finished difference Result 4807 states and 7019 transitions. [2024-11-09 09:59:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:59:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 09:59:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:20,658 INFO L225 Difference]: With dead ends: 4807 [2024-11-09 09:59:20,659 INFO L226 Difference]: Without dead ends: 4807 [2024-11-09 09:59:20,659 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 [2024-11-09 09:59:20,662 INFO L432 NwaCegarLoop]: 2025 mSDtfsCounter, 3103 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:20,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3113 Valid, 3925 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 09:59:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2024-11-09 09:59:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4709. [2024-11-09 09:59:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 3862 states have (on average 1.7661833247022267) internal successors, (6821), 4686 states have internal predecessors, (6821), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 6867 transitions. [2024-11-09 09:59:20,744 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 6867 transitions. Word has length 20 [2024-11-09 09:59:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:20,744 INFO L471 AbstractCegarLoop]: Abstraction has 4709 states and 6867 transitions. [2024-11-09 09:59:20,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 6867 transitions. [2024-11-09 09:59:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 09:59:20,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:20,746 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] [2024-11-09 09:59:20,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 09:59:20,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:20,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash -286362848, now seen corresponding path program 1 times [2024-11-09 09:59:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765462770] [2024-11-09 09:59:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765462770] [2024-11-09 09:59:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765462770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:20,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:20,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:59:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588401806] [2024-11-09 09:59:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:20,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:20,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:20,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:20,831 INFO L87 Difference]: Start difference. First operand 4709 states and 6867 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:20,893 INFO L93 Difference]: Finished difference Result 4571 states and 6661 transitions. [2024-11-09 09:59:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 09:59:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:20,900 INFO L225 Difference]: With dead ends: 4571 [2024-11-09 09:59:20,900 INFO L226 Difference]: Without dead ends: 4571 [2024-11-09 09:59:20,901 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 [2024-11-09 09:59:20,901 INFO L432 NwaCegarLoop]: 2856 mSDtfsCounter, 61 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:20,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:59:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2024-11-09 09:59:20,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4571. [2024-11-09 09:59:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 3736 states have (on average 1.770610278372591) internal successors, (6615), 4548 states have internal predecessors, (6615), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 6661 transitions. [2024-11-09 09:59:20,951 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 6661 transitions. Word has length 20 [2024-11-09 09:59:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:20,953 INFO L471 AbstractCegarLoop]: Abstraction has 4571 states and 6661 transitions. [2024-11-09 09:59:20,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 6661 transitions. [2024-11-09 09:59:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 09:59:20,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:20,954 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] [2024-11-09 09:59:20,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 09:59:20,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:20,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -316632036, now seen corresponding path program 1 times [2024-11-09 09:59:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941824207] [2024-11-09 09:59:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941824207] [2024-11-09 09:59:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941824207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342139906] [2024-11-09 09:59:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:21,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:21,009 INFO L87 Difference]: Start difference. First operand 4571 states and 6661 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) [2024-11-09 09:59:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:21,082 INFO L93 Difference]: Finished difference Result 4542 states and 6611 transitions. [2024-11-09 09:59:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:59:21,082 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 [2024-11-09 09:59:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:21,091 INFO L225 Difference]: With dead ends: 4542 [2024-11-09 09:59:21,091 INFO L226 Difference]: Without dead ends: 4542 [2024-11-09 09:59:21,092 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 [2024-11-09 09:59:21,092 INFO L432 NwaCegarLoop]: 2821 mSDtfsCounter, 41 mSDsluCounter, 5614 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:21,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 8435 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:59:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2024-11-09 09:59:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4536. [2024-11-09 09:59:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 3708 states have (on average 1.7688781014023733) internal successors, (6559), 4513 states have internal predecessors, (6559), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 6605 transitions. [2024-11-09 09:59:21,152 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 6605 transitions. Word has length 22 [2024-11-09 09:59:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:21,155 INFO L471 AbstractCegarLoop]: Abstraction has 4536 states and 6605 transitions. [2024-11-09 09:59:21,155 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) [2024-11-09 09:59:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 6605 transitions. [2024-11-09 09:59:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 09:59:21,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:21,157 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] [2024-11-09 09:59:21,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 09:59:21,157 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:21,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash -828222326, now seen corresponding path program 1 times [2024-11-09 09:59:21,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014009933] [2024-11-09 09:59:21,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:21,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:21,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014009933] [2024-11-09 09:59:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014009933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:21,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:59:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799704630] [2024-11-09 09:59:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:21,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:21,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:21,355 INFO L87 Difference]: Start difference. First operand 4536 states and 6605 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-09 09:59:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:23,005 INFO L93 Difference]: Finished difference Result 6833 states and 9754 transitions. [2024-11-09 09:59:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:59:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-09 09:59:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:23,017 INFO L225 Difference]: With dead ends: 6833 [2024-11-09 09:59:23,018 INFO L226 Difference]: Without dead ends: 6833 [2024-11-09 09:59:23,018 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 [2024-11-09 09:59:23,019 INFO L432 NwaCegarLoop]: 2286 mSDtfsCounter, 2318 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 5935 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:23,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 5935 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 09:59:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2024-11-09 09:59:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 4532. [2024-11-09 09:59:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.766720604099245) internal successors, (6551), 4509 states have internal predecessors, (6551), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6597 transitions. [2024-11-09 09:59:23,092 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6597 transitions. Word has length 36 [2024-11-09 09:59:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:23,094 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6597 transitions. [2024-11-09 09:59:23,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-09 09:59:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6597 transitions. [2024-11-09 09:59:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 09:59:23,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:23,098 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] [2024-11-09 09:59:23,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 09:59:23,098 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:23,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash 852766398, now seen corresponding path program 1 times [2024-11-09 09:59:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105580117] [2024-11-09 09:59:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:23,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105580117] [2024-11-09 09:59:23,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105580117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:23,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:23,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804494992] [2024-11-09 09:59:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:23,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:59:23,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:59:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:59:23,246 INFO L87 Difference]: Start difference. First operand 4532 states and 6597 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:23,317 INFO L93 Difference]: Finished difference Result 4532 states and 6589 transitions. [2024-11-09 09:59:23,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:59:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 09:59:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:23,327 INFO L225 Difference]: With dead ends: 4532 [2024-11-09 09:59:23,327 INFO L226 Difference]: Without dead ends: 4532 [2024-11-09 09:59:23,327 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 [2024-11-09 09:59:23,328 INFO L432 NwaCegarLoop]: 2816 mSDtfsCounter, 21 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8417 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:23,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8417 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:59:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2024-11-09 09:59:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2024-11-09 09:59:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.7645631067961165) internal successors, (6543), 4509 states have internal predecessors, (6543), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 09:59:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6589 transitions. [2024-11-09 09:59:23,389 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6589 transitions. Word has length 70 [2024-11-09 09:59:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:23,389 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6589 transitions. [2024-11-09 09:59:23,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:23,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6589 transitions. [2024-11-09 09:59:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 09:59:23,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:23,391 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] [2024-11-09 09:59:23,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 09:59:23,392 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:23,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1685969162, now seen corresponding path program 1 times [2024-11-09 09:59:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:23,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157677671] [2024-11-09 09:59:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157677671] [2024-11-09 09:59:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157677671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:23,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:59:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049539842] [2024-11-09 09:59:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:23,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:59:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:59:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:59:23,567 INFO L87 Difference]: Start difference. First operand 4532 states and 6589 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:23,665 INFO L93 Difference]: Finished difference Result 6036 states and 8768 transitions. [2024-11-09 09:59:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:59:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-09 09:59:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:23,677 INFO L225 Difference]: With dead ends: 6036 [2024-11-09 09:59:23,677 INFO L226 Difference]: Without dead ends: 6036 [2024-11-09 09:59:23,677 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 [2024-11-09 09:59:23,678 INFO L432 NwaCegarLoop]: 2832 mSDtfsCounter, 1083 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:23,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 5601 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:59:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2024-11-09 09:59:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5385. [2024-11-09 09:59:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 4557 states have (on average 1.7469826640333552) internal successors, (7961), 5358 states have internal predecessors, (7961), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 09:59:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8015 transitions. [2024-11-09 09:59:23,773 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8015 transitions. Word has length 78 [2024-11-09 09:59:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:23,773 INFO L471 AbstractCegarLoop]: Abstraction has 5385 states and 8015 transitions. [2024-11-09 09:59:23,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8015 transitions. [2024-11-09 09:59:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 09:59:23,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:23,775 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] [2024-11-09 09:59:23,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 09:59:23,775 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:23,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1252654197, now seen corresponding path program 1 times [2024-11-09 09:59:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557094468] [2024-11-09 09:59:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557094468] [2024-11-09 09:59:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557094468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:24,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 09:59:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928148222] [2024-11-09 09:59:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:24,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 09:59:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 09:59:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 09:59:24,193 INFO L87 Difference]: Start difference. First operand 5385 states and 8015 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:25,964 INFO L93 Difference]: Finished difference Result 5301 states and 7873 transitions. [2024-11-09 09:59:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:59:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-09 09:59:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:25,975 INFO L225 Difference]: With dead ends: 5301 [2024-11-09 09:59:25,976 INFO L226 Difference]: Without dead ends: 5301 [2024-11-09 09:59:25,976 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 [2024-11-09 09:59:25,976 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 5265 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:25,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5275 Valid, 3045 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 09:59:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2024-11-09 09:59:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4759. [2024-11-09 09:59:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4015 states have (on average 1.7073474470734744) internal successors, (6855), 4732 states have internal predecessors, (6855), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 09:59:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 6909 transitions. [2024-11-09 09:59:26,068 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 6909 transitions. Word has length 81 [2024-11-09 09:59:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:26,069 INFO L471 AbstractCegarLoop]: Abstraction has 4759 states and 6909 transitions. [2024-11-09 09:59:26,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 6909 transitions. [2024-11-09 09:59:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 09:59:26,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:26,070 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] [2024-11-09 09:59:26,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 09:59:26,071 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:26,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash -420245411, now seen corresponding path program 1 times [2024-11-09 09:59:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934190465] [2024-11-09 09:59:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934190465] [2024-11-09 09:59:26,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934190465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814806396] [2024-11-09 09:59:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:26,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:59:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:59:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:59:26,386 INFO L87 Difference]: Start difference. First operand 4759 states and 6909 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:27,763 INFO L93 Difference]: Finished difference Result 4758 states and 6907 transitions. [2024-11-09 09:59:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:59:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-09 09:59:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:27,771 INFO L225 Difference]: With dead ends: 4758 [2024-11-09 09:59:27,771 INFO L226 Difference]: Without dead ends: 4758 [2024-11-09 09:59:27,771 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 [2024-11-09 09:59:27,772 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 2 mSDsluCounter, 5744 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8487 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:27,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8487 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 09:59:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2024-11-09 09:59:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4758. [2024-11-09 09:59:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4015 states have (on average 1.7068493150684931) internal successors, (6853), 4731 states have internal predecessors, (6853), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 09:59:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6907 transitions. [2024-11-09 09:59:27,830 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6907 transitions. Word has length 86 [2024-11-09 09:59:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:27,830 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6907 transitions. [2024-11-09 09:59:27,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6907 transitions. [2024-11-09 09:59:27,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 09:59:27,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:27,831 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] [2024-11-09 09:59:27,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 09:59:27,832 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:27,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash -420245410, now seen corresponding path program 1 times [2024-11-09 09:59:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814981556] [2024-11-09 09:59:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:28,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:28,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814981556] [2024-11-09 09:59:28,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814981556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:28,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:59:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495452411] [2024-11-09 09:59:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:28,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:59:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:59:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:59:28,393 INFO L87 Difference]: Start difference. First operand 4758 states and 6907 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:30,004 INFO L93 Difference]: Finished difference Result 4757 states and 6905 transitions. [2024-11-09 09:59:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:59:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-09 09:59:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:30,013 INFO L225 Difference]: With dead ends: 4757 [2024-11-09 09:59:30,013 INFO L226 Difference]: Without dead ends: 4757 [2024-11-09 09:59:30,014 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 [2024-11-09 09:59:30,014 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 1 mSDsluCounter, 5718 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:30,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8461 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 09:59:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2024-11-09 09:59:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4757. [2024-11-09 09:59:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4013 states have (on average 1.7072015948168453) internal successors, (6851), 4730 states have internal predecessors, (6851), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 09:59:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 6905 transitions. [2024-11-09 09:59:30,072 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 6905 transitions. Word has length 86 [2024-11-09 09:59:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:30,073 INFO L471 AbstractCegarLoop]: Abstraction has 4757 states and 6905 transitions. [2024-11-09 09:59:30,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 09:59:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 6905 transitions. [2024-11-09 09:59:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 09:59:30,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:30,074 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] [2024-11-09 09:59:30,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 09:59:30,074 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:30,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -163344476, now seen corresponding path program 1 times [2024-11-09 09:59:30,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:30,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460509507] [2024-11-09 09:59:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:30,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460509507] [2024-11-09 09:59:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460509507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:30,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:30,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 09:59:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402429530] [2024-11-09 09:59:30,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:30,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 09:59:30,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 09:59:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 09:59:30,342 INFO L87 Difference]: Start difference. First operand 4757 states and 6905 transitions. Second operand has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:32,364 INFO L93 Difference]: Finished difference Result 4775 states and 6938 transitions. [2024-11-09 09:59:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 09:59:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2024-11-09 09:59:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:32,374 INFO L225 Difference]: With dead ends: 4775 [2024-11-09 09:59:32,374 INFO L226 Difference]: Without dead ends: 4775 [2024-11-09 09:59:32,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 09:59:32,375 INFO L432 NwaCegarLoop]: 2707 mSDtfsCounter, 31 mSDsluCounter, 10436 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13143 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:32,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13143 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 09:59:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-09 09:59:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4766. [2024-11-09 09:59:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.7065406615269834) internal successors, (6862), 4737 states have internal predecessors, (6862), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-09 09:59:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6928 transitions. [2024-11-09 09:59:32,441 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6928 transitions. Word has length 94 [2024-11-09 09:59:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:32,442 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6928 transitions. [2024-11-09 09:59:32,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6928 transitions. [2024-11-09 09:59:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 09:59:32,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:32,443 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] [2024-11-09 09:59:32,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 09:59:32,444 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:32,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash -163344475, now seen corresponding path program 1 times [2024-11-09 09:59:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:32,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152226157] [2024-11-09 09:59:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:32,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152226157] [2024-11-09 09:59:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152226157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:33,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 09:59:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109877357] [2024-11-09 09:59:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:33,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 09:59:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 09:59:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 09:59:33,059 INFO L87 Difference]: Start difference. First operand 4766 states and 6928 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:35,141 INFO L93 Difference]: Finished difference Result 4766 states and 6926 transitions. [2024-11-09 09:59:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:59:35,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 94 [2024-11-09 09:59:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:35,151 INFO L225 Difference]: With dead ends: 4766 [2024-11-09 09:59:35,151 INFO L226 Difference]: Without dead ends: 4766 [2024-11-09 09:59:35,152 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 [2024-11-09 09:59:35,152 INFO L432 NwaCegarLoop]: 2714 mSDtfsCounter, 43 mSDsluCounter, 8081 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 10795 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:35,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 10795 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 09:59:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2024-11-09 09:59:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4766. [2024-11-09 09:59:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.706043272817707) internal successors, (6860), 4737 states have internal predecessors, (6860), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-09 09:59:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6926 transitions. [2024-11-09 09:59:35,223 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6926 transitions. Word has length 94 [2024-11-09 09:59:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:35,224 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6926 transitions. [2024-11-09 09:59:35,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6926 transitions. [2024-11-09 09:59:35,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 09:59:35,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:35,225 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] [2024-11-09 09:59:35,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 09:59:35,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:35,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1059827593, now seen corresponding path program 1 times [2024-11-09 09:59:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253068513] [2024-11-09 09:59:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:35,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:35,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:35,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:35,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253068513] [2024-11-09 09:59:35,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253068513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:35,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150879000] [2024-11-09 09:59:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:35,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:59:35,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:59:35,761 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) [2024-11-09 09:59:35,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 09:59:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:36,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 09:59:36,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:59:36,241 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:59:36,242 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 [2024-11-09 09:59:36,261 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 [2024-11-09 09:59:36,339 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 09:59:36,340 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 [2024-11-09 09:59:36,377 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 [2024-11-09 09:59:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:36,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:59:36,431 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-09 09:59:36,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2024-11-09 09:59:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150879000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:36,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:59:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 14 [2024-11-09 09:59:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298253099] [2024-11-09 09:59:36,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:59:36,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 09:59:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 09:59:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=195, Unknown=7, NotChecked=0, Total=240 [2024-11-09 09:59:36,485 INFO L87 Difference]: Start difference. First operand 4766 states and 6926 transitions. Second operand has 15 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:59:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:40,013 INFO L93 Difference]: Finished difference Result 4765 states and 6924 transitions. [2024-11-09 09:59:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 09:59:40,013 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2024-11-09 09:59:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:40,021 INFO L225 Difference]: With dead ends: 4765 [2024-11-09 09:59:40,021 INFO L226 Difference]: Without dead ends: 4765 [2024-11-09 09:59:40,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=451, Unknown=8, NotChecked=0, Total=552 [2024-11-09 09:59:40,022 INFO L432 NwaCegarLoop]: 1892 mSDtfsCounter, 2684 mSDsluCounter, 14968 mSDsCounter, 0 mSdLazyCounter, 7827 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 16860 SdHoareTripleChecker+Invalid, 7869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 7827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:40,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 16860 Invalid, 7869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 7827 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 09:59:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4765 states. [2024-11-09 09:59:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4765 to 4765. [2024-11-09 09:59:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4765 states, 4021 states have (on average 1.7055458841084308) internal successors, (6858), 4736 states have internal predecessors, (6858), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-09 09:59:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 6924 transitions. [2024-11-09 09:59:40,083 INFO L78 Accepts]: Start accepts. Automaton has 4765 states and 6924 transitions. Word has length 95 [2024-11-09 09:59:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:40,084 INFO L471 AbstractCegarLoop]: Abstraction has 4765 states and 6924 transitions. [2024-11-09 09:59:40,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 8.384615384615385) internal successors, (109), 13 states have internal predecessors, (109), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:59:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4765 states and 6924 transitions. [2024-11-09 09:59:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 09:59:40,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:40,086 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] [2024-11-09 09:59:40,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 09:59:40,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 09:59:40,287 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:40,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1059827594, now seen corresponding path program 1 times [2024-11-09 09:59:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:40,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917044966] [2024-11-09 09:59:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:41,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:41,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917044966] [2024-11-09 09:59:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917044966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331620826] [2024-11-09 09:59:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:41,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:59:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:59:41,182 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) [2024-11-09 09:59:41,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 09:59:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:41,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 09:59:41,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:59:41,582 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:59:41,583 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 [2024-11-09 09:59:41,588 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 [2024-11-09 09:59:41,602 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 [2024-11-09 09:59:41,605 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 [2024-11-09 09:59:41,669 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 [2024-11-09 09:59:41,675 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 [2024-11-09 09:59:41,787 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 09:59:41,788 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 [2024-11-09 09:59:41,797 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 [2024-11-09 09:59:41,826 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 [2024-11-09 09:59:41,832 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 [2024-11-09 09:59:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:41,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:59:41,926 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_816 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_816) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_816) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 09:59:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331620826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:41,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:59:41,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-09 09:59:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56003948] [2024-11-09 09:59:41,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:59:41,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 09:59:41,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 09:59:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-09 09:59:41,933 INFO L87 Difference]: Start difference. First operand 4765 states and 6924 transitions. Second operand has 16 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 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) [2024-11-09 09:59:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:47,931 INFO L93 Difference]: Finished difference Result 4772 states and 6930 transitions. [2024-11-09 09:59:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 09:59:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2024-11-09 09:59:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:47,937 INFO L225 Difference]: With dead ends: 4772 [2024-11-09 09:59:47,937 INFO L226 Difference]: Without dead ends: 4772 [2024-11-09 09:59:47,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=420, Unknown=1, NotChecked=42, Total=552 [2024-11-09 09:59:47,938 INFO L432 NwaCegarLoop]: 1897 mSDtfsCounter, 2698 mSDsluCounter, 14261 mSDsCounter, 0 mSdLazyCounter, 11274 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 16158 SdHoareTripleChecker+Invalid, 11316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 11274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:47,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 16158 Invalid, 11316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 11274 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-09 09:59:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2024-11-09 09:59:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4760. [2024-11-09 09:59:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4017 states have (on average 1.7057505601194922) internal successors, (6852), 4732 states have internal predecessors, (6852), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 09:59:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 6906 transitions. [2024-11-09 09:59:47,985 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 6906 transitions. Word has length 95 [2024-11-09 09:59:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:47,985 INFO L471 AbstractCegarLoop]: Abstraction has 4760 states and 6906 transitions. [2024-11-09 09:59:47,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 8.76923076923077) internal successors, (114), 15 states have internal predecessors, (114), 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) [2024-11-09 09:59:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 6906 transitions. [2024-11-09 09:59:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 09:59:47,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:47,987 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] [2024-11-09 09:59:48,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 09:59:48,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:59:48,191 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:48,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash 3326204, now seen corresponding path program 1 times [2024-11-09 09:59:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146388089] [2024-11-09 09:59:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:48,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:48,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:48,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146388089] [2024-11-09 09:59:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146388089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:48,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:48,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 09:59:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646727834] [2024-11-09 09:59:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:48,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 09:59:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 09:59:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 09:59:48,764 INFO L87 Difference]: Start difference. First operand 4760 states and 6906 transitions. Second operand has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:52,342 INFO L93 Difference]: Finished difference Result 4779 states and 6938 transitions. [2024-11-09 09:59:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 09:59:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2024-11-09 09:59:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:52,351 INFO L225 Difference]: With dead ends: 4779 [2024-11-09 09:59:52,351 INFO L226 Difference]: Without dead ends: 4779 [2024-11-09 09:59:52,351 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 [2024-11-09 09:59:52,352 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2687 mSDsluCounter, 14966 mSDsCounter, 0 mSdLazyCounter, 7837 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 16857 SdHoareTripleChecker+Invalid, 7860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:52,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 16857 Invalid, 7860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 7837 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 09:59:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2024-11-09 09:59:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4775. [2024-11-09 09:59:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7040436616224262) internal successors, (6869), 4745 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 09:59:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6925 transitions. [2024-11-09 09:59:52,412 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6925 transitions. Word has length 97 [2024-11-09 09:59:52,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:52,413 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6925 transitions. [2024-11-09 09:59:52,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6925 transitions. [2024-11-09 09:59:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 09:59:52,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:52,438 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] [2024-11-09 09:59:52,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 09:59:52,438 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:52,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash 3326205, now seen corresponding path program 1 times [2024-11-09 09:59:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:52,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893815771] [2024-11-09 09:59:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:53,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:53,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:53,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893815771] [2024-11-09 09:59:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893815771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:59:53,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:59:53,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 09:59:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416485266] [2024-11-09 09:59:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:59:53,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 09:59:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 09:59:53,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 09:59:53,181 INFO L87 Difference]: Start difference. First operand 4775 states and 6925 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:59:56,383 INFO L93 Difference]: Finished difference Result 4778 states and 6936 transitions. [2024-11-09 09:59:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 09:59:56,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2024-11-09 09:59:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:59:56,394 INFO L225 Difference]: With dead ends: 4778 [2024-11-09 09:59:56,394 INFO L226 Difference]: Without dead ends: 4778 [2024-11-09 09:59:56,394 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 [2024-11-09 09:59:56,395 INFO L432 NwaCegarLoop]: 1898 mSDtfsCounter, 2701 mSDsluCounter, 8258 mSDsCounter, 0 mSdLazyCounter, 6307 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 10156 SdHoareTripleChecker+Invalid, 6346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:59:56,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 10156 Invalid, 6346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 6307 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 09:59:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2024-11-09 09:59:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4775. [2024-11-09 09:59:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7035475068221284) internal successors, (6867), 4745 states have internal predecessors, (6867), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 09:59:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6923 transitions. [2024-11-09 09:59:56,451 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6923 transitions. Word has length 97 [2024-11-09 09:59:56,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:59:56,452 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6923 transitions. [2024-11-09 09:59:56,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 09:59:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6923 transitions. [2024-11-09 09:59:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 09:59:56,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:59:56,453 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] [2024-11-09 09:59:56,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 09:59:56,453 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 09:59:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:59:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1019894519, now seen corresponding path program 1 times [2024-11-09 09:59:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:59:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419906629] [2024-11-09 09:59:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:59:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:56,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 09:59:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:57,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:57,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419906629] [2024-11-09 09:59:57,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419906629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:57,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210449518] [2024-11-09 09:59:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:57,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:59:57,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:59:57,016 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) [2024-11-09 09:59:57,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 09:59:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:57,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 09:59:57,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:59:57,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 09:59:57,503 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:59:57,503 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 [2024-11-09 09:59:57,511 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 [2024-11-09 09:59:57,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 09:59:57,578 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 [2024-11-09 09:59:57,625 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 09:59:57,625 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 [2024-11-09 09:59:57,640 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 [2024-11-09 09:59:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:59:57,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:59:57,655 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1104) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-09 09:59:57,730 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-09 09:59:57,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-09 09:59:57,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210449518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:57,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:59:57,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 16 [2024-11-09 09:59:57,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903805273] [2024-11-09 09:59:57,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:59:57,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 09:59:57,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:59:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 09:59:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=284, Unknown=9, NotChecked=34, Total=380 [2024-11-09 09:59:57,772 INFO L87 Difference]: Start difference. First operand 4775 states and 6923 transitions. Second operand has 17 states, 15 states have (on average 9.666666666666666) internal successors, (145), 15 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 10:00:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:00:01,745 INFO L93 Difference]: Finished difference Result 4777 states and 6934 transitions. [2024-11-09 10:00:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:00:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 9.666666666666666) internal successors, (145), 15 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2024-11-09 10:00:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:00:01,755 INFO L225 Difference]: With dead ends: 4777 [2024-11-09 10:00:01,755 INFO L226 Difference]: Without dead ends: 4777 [2024-11-09 10:00:01,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=582, Unknown=9, NotChecked=50, Total=756 [2024-11-09 10:00:01,756 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2666 mSDsluCounter, 18660 mSDsCounter, 0 mSdLazyCounter, 9524 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 20551 SdHoareTripleChecker+Invalid, 9564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 9524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 10:00:01,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 20551 Invalid, 9564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 9524 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 10:00:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2024-11-09 10:00:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4774. [2024-11-09 10:00:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4774 states, 4031 states have (on average 1.7030513520218309) internal successors, (6865), 4744 states have internal predecessors, (6865), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:00:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4774 states to 4774 states and 6921 transitions. [2024-11-09 10:00:01,856 INFO L78 Accepts]: Start accepts. Automaton has 4774 states and 6921 transitions. Word has length 98 [2024-11-09 10:00:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:00:01,857 INFO L471 AbstractCegarLoop]: Abstraction has 4774 states and 6921 transitions. [2024-11-09 10:00:01,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 9.666666666666666) internal successors, (145), 15 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 10:00:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4774 states and 6921 transitions. [2024-11-09 10:00:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 10:00:01,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:00:01,858 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] [2024-11-09 10:00:01,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:00:02,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:00:02,059 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:00:02,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:00:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1019894520, now seen corresponding path program 1 times [2024-11-09 10:00:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:00:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303848504] [2024-11-09 10:00:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:00:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:00:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:00:02,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:00:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:00:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:00:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:00:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303848504] [2024-11-09 10:00:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303848504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:00:02,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663942703] [2024-11-09 10:00:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:00:02,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:00:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:00:02,903 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) [2024-11-09 10:00:02,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:00:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:00:03,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 10:00:03,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:00:03,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 10:00:03,376 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:00:03,376 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 [2024-11-09 10:00:03,381 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 [2024-11-09 10:00:03,406 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 [2024-11-09 10:00:03,412 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 [2024-11-09 10:00:03,489 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 [2024-11-09 10:00:03,493 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 [2024-11-09 10:00:03,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:00:03,593 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 [2024-11-09 10:00:03,600 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 [2024-11-09 10:00:03,669 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:00:03,670 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 [2024-11-09 10:00:03,673 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 [2024-11-09 10:00:03,691 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 [2024-11-09 10:00:03,694 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 [2024-11-09 10:00:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:00:03,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:00:03,782 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1267 (Array Int Int)) (v_ArrVal_1266 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1266 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2024-11-09 10:00:03,793 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1266 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1267 (Array Int Int)) (v_ArrVal_1266 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_1267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-09 10:00:03,847 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1267 (Array Int Int)) (v_ArrVal_1266 (Array Int Int)) (v_ArrVal_1273 (Array Int Int)) (v_ArrVal_1272 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1273))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1272) .cse0 v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1266 (Array Int Int)) (v_ArrVal_1273 (Array Int Int)) (v_ArrVal_1272 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1272) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))))) is different from false [2024-11-09 10:00:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663942703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:00:03,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:00:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-09 10:00:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254086465] [2024-11-09 10:00:03,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:00:03,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 10:00:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:00:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 10:00:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=437, Unknown=3, NotChecked=132, Total=650 [2024-11-09 10:00:03,851 INFO L87 Difference]: Start difference. First operand 4774 states and 6921 transitions. Second operand has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 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) [2024-11-09 10:00:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:00:12,078 INFO L93 Difference]: Finished difference Result 4776 states and 6932 transitions. [2024-11-09 10:00:12,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:00:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 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 [2024-11-09 10:00:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:00:12,087 INFO L225 Difference]: With dead ends: 4776 [2024-11-09 10:00:12,087 INFO L226 Difference]: Without dead ends: 4776 [2024-11-09 10:00:12,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=693, Unknown=3, NotChecked=168, Total=992 [2024-11-09 10:00:12,088 INFO L432 NwaCegarLoop]: 1896 mSDtfsCounter, 2651 mSDsluCounter, 22489 mSDsCounter, 0 mSdLazyCounter, 16662 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 24385 SdHoareTripleChecker+Invalid, 16689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 16662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-09 10:00:12,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 24385 Invalid, 16689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 16662 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-09 10:00:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2024-11-09 10:00:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4758. [2024-11-09 10:00:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4017 states have (on average 1.704754792133433) internal successors, (6848), 4730 states have internal predecessors, (6848), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:00:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6902 transitions. [2024-11-09 10:00:12,153 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6902 transitions. Word has length 98 [2024-11-09 10:00:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:00:12,153 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6902 transitions. [2024-11-09 10:00:12,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 states have internal predecessors, (157), 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) [2024-11-09 10:00:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6902 transitions. [2024-11-09 10:00:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 10:00:12,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:00:12,154 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] [2024-11-09 10:00:12,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:00:12,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:00:12,355 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:00:12,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:00:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 307366859, now seen corresponding path program 1 times [2024-11-09 10:00:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:00:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269605637] [2024-11-09 10:00:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:00:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:00:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:00:12,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:00:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:00:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:00:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:00:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269605637] [2024-11-09 10:00:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269605637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:00:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:00:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 10:00:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343431566] [2024-11-09 10:00:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:00:12,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:00:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:00:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:00:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:00:12,954 INFO L87 Difference]: Start difference. First operand 4758 states and 6902 transitions. Second operand has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 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)