./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:42:53,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:42:53,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 17:42:53,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:42:53,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:42:53,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:42:53,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:42:53,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:42:53,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:42:53,803 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:42:53,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:42:53,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:42:53,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:42:53,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:42:53,804 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:42:53,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:42:53,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:42:53,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 [2025-03-08 17:42:54,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:42:54,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:42:54,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:42:54,033 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:42:54,033 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:42:54,034 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2025-03-08 17:42:55,156 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef9127c/c63cfd8695ff4ba681bfbf8b49089d9f/FLAGf435bea26 [2025-03-08 17:42:55,602 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:42:55,603 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2025-03-08 17:42:55,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef9127c/c63cfd8695ff4ba681bfbf8b49089d9f/FLAGf435bea26 [2025-03-08 17:42:55,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ef9127c/c63cfd8695ff4ba681bfbf8b49089d9f [2025-03-08 17:42:55,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:42:55,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:42:55,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:42:55,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:42:55,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:42:55,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:42:55" (1/1) ... [2025-03-08 17:42:55,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a12ba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:55, skipping insertion in model container [2025-03-08 17:42:55,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:42:55" (1/1) ... [2025-03-08 17:42:55,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:42:55,958 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2025-03-08 17:42:55,965 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2025-03-08 17:42:56,399 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,400 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,400 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,402 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,403 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,412 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,412 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,413 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,414 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,415 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,416 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,416 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,416 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,669 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,673 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:42:56,727 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:42:56,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2025-03-08 17:42:56,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2025-03-08 17:42:56,790 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,791 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,792 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,792 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,793 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,803 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,803 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,804 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,805 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,805 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,805 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,861 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,865 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:42:56,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7737-7748] [2025-03-08 17:42:56,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:42:57,027 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:42:57,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57 WrapperNode [2025-03-08 17:42:57,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:42:57,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:42:57,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:42:57,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:42:57,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,145 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656 [2025-03-08 17:42:57,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:42:57,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:42:57,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:42:57,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:42:57,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,220 INFO L175 MemorySlicer]: Split 313 memory accesses to 6 slices as follows [3, 238, 2, 9, 55, 6]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [1, 6, 2, 5, 10, 0]. The 239 writes are split as follows [1, 232, 0, 1, 3, 2]. [2025-03-08 17:42:57,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,255 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:42:57,277 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:42:57,277 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:42:57,277 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:42:57,277 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (1/1) ... [2025-03-08 17:42:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:42:57,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:42:57,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:42:57,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-08 17:42:57,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-08 17:42:57,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 17:42:57,325 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 17:42:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 17:42:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 17:42:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 17:42:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 17:42:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-08 17:42:57,327 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 17:42:57,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:42:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-08 17:42:57,328 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-08 17:42:57,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 17:42:57,329 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-08 17:42:57,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-08 17:42:57,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 17:42:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 17:42:57,542 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:42:57,543 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:42:57,579 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-08 17:42:57,601 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-08 17:42:57,625 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-08 17:42:57,667 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-03-08 17:42:57,740 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-08 17:42:57,743 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 17:42:57,756 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7358: havoc #t~ret683.base, #t~ret683.offset; [2025-03-08 17:43:02,863 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3417: havoc aws_array_list_back_~last_item_offset~0#1; [2025-03-08 17:43:02,863 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3426: havoc aws_array_list_back_#t~ret217#1; [2025-03-08 17:43:02,927 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2025-03-08 17:43:02,927 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:43:02,940 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:43:02,942 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:43:02,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:43:02 BoogieIcfgContainer [2025-03-08 17:43:02,942 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:43:02,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:43:02,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:43:02,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:43:02,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:42:55" (1/3) ... [2025-03-08 17:43:02,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2648e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:43:02, skipping insertion in model container [2025-03-08 17:43:02,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:42:57" (2/3) ... [2025-03-08 17:43:02,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2648e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:43:02, skipping insertion in model container [2025-03-08 17:43:02,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:43:02" (3/3) ... [2025-03-08 17:43:02,950 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness_negated.i [2025-03-08 17:43:02,961 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:43:02,962 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_back_harness_negated.i that has 18 procedures, 184 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 17:43:03,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:43:03,022 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=LoopHeads, 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;@54414e99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:43:03,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 17:43:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-03-08 17:43:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-08 17:43:03,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:43:03,037 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:43:03,038 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:43:03,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:43:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash -702525341, now seen corresponding path program 1 times [2025-03-08 17:43:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:43:03,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875259305] [2025-03-08 17:43:03,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:03,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:43:07,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 17:43:07,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 17:43:07,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:07,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-03-08 17:43:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:43:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875259305] [2025-03-08 17:43:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875259305] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:43:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822543249] [2025-03-08 17:43:08,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:08,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:43:08,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:43:08,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:43:08,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:43:12,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 17:43:12,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 17:43:12,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:12,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:12,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 17:43:12,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:43:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-03-08 17:43:12,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:43:12,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822543249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:43:12,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:43:12,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 17:43:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915174957] [2025-03-08 17:43:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:43:12,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 17:43:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:43:12,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 17:43:12,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:43:12,686 INFO L87 Difference]: Start difference. First operand has 184 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-08 17:43:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:43:12,726 INFO L93 Difference]: Finished difference Result 361 states and 512 transitions. [2025-03-08 17:43:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 17:43:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129 [2025-03-08 17:43:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:43:12,732 INFO L225 Difference]: With dead ends: 361 [2025-03-08 17:43:12,733 INFO L226 Difference]: Without dead ends: 175 [2025-03-08 17:43:12,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:43:12,741 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:43:12,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:43:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-08 17:43:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-08 17:43:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 104 states have internal predecessors, (120), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-08 17:43:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 228 transitions. [2025-03-08 17:43:12,810 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 228 transitions. Word has length 129 [2025-03-08 17:43:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:43:12,810 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 228 transitions. [2025-03-08 17:43:12,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-08 17:43:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 228 transitions. [2025-03-08 17:43:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-08 17:43:12,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:43:12,813 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:43:12,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 17:43:13,013 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,SelfDestructingSolverStorable0 [2025-03-08 17:43:13,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:43:13,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:43:13,014 INFO L85 PathProgramCache]: Analyzing trace with hash -673010331, now seen corresponding path program 1 times [2025-03-08 17:43:13,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:43:13,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886047873] [2025-03-08 17:43:13,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:13,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:43:16,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 17:43:16,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 17:43:16,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:16,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 17:43:17,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:43:17,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886047873] [2025-03-08 17:43:17,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886047873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:43:17,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929450778] [2025-03-08 17:43:17,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:17,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:43:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:43:17,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:43:17,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:43:21,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 17:43:21,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 17:43:21,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:21,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:21,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:43:22,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:43:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 17:43:22,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:43:22,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929450778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:43:22,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:43:22,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-03-08 17:43:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526057139] [2025-03-08 17:43:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:43:22,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:43:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:43:22,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:43:22,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:43:22,660 INFO L87 Difference]: Start difference. First operand 175 states and 228 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-08 17:43:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:43:24,905 INFO L93 Difference]: Finished difference Result 323 states and 427 transitions. [2025-03-08 17:43:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:43:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2025-03-08 17:43:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:43:24,908 INFO L225 Difference]: With dead ends: 323 [2025-03-08 17:43:24,908 INFO L226 Difference]: Without dead ends: 177 [2025-03-08 17:43:24,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:43:24,910 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 240 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:43:24,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 650 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 17:43:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-08 17:43:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2025-03-08 17:43:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 106 states have internal predecessors, (121), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2025-03-08 17:43:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2025-03-08 17:43:24,922 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 129 [2025-03-08 17:43:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:43:24,923 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2025-03-08 17:43:24,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-08 17:43:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2025-03-08 17:43:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 17:43:24,924 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:43:24,926 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:43:24,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 17:43:25,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 17:43:25,127 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:43:25,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:43:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1804562303, now seen corresponding path program 1 times [2025-03-08 17:43:25,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:43:25,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611193257] [2025-03-08 17:43:25,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:43:28,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 17:43:29,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 17:43:29,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:29,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 17:43:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:43:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611193257] [2025-03-08 17:43:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611193257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:43:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259493007] [2025-03-08 17:43:31,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:43:31,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:43:31,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:43:31,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:43:31,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:43:35,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 17:43:35,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 17:43:35,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:43:35,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:35,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 4521 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 17:43:35,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:43:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-08 17:43:37,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:43:37,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259493007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:43:37,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:43:37,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 17:43:37,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932305494] [2025-03-08 17:43:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:43:37,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:43:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:43:37,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:43:37,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:43:37,080 INFO L87 Difference]: Start difference. First operand 177 states and 234 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 17:43:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:43:40,102 INFO L93 Difference]: Finished difference Result 285 states and 377 transitions. [2025-03-08 17:43:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:43:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 159 [2025-03-08 17:43:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:43:40,105 INFO L225 Difference]: With dead ends: 285 [2025-03-08 17:43:40,105 INFO L226 Difference]: Without dead ends: 177 [2025-03-08 17:43:40,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-03-08 17:43:40,106 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 243 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 17:43:40,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 805 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 17:43:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-08 17:43:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2025-03-08 17:43:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 106 states have internal predecessors, (121), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2025-03-08 17:43:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 231 transitions. [2025-03-08 17:43:40,117 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 231 transitions. Word has length 159 [2025-03-08 17:43:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:43:40,118 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 231 transitions. [2025-03-08 17:43:40,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 17:43:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 231 transitions. [2025-03-08 17:43:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 17:43:40,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:43:40,120 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:43:40,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 17:43:40,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:43:40,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:43:40,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:43:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 319784652, now seen corresponding path program 2 times [2025-03-08 17:43:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:43:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732312831] [2025-03-08 17:43:40,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:43:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:43:43,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-03-08 17:43:43,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 174 statements. [2025-03-08 17:43:43,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:43:43,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-03-08 17:43:45,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:43:45,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732312831] [2025-03-08 17:43:45,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732312831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:43:45,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:43:45,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:43:45,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634993920] [2025-03-08 17:43:45,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:43:45,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:43:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:43:45,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:43:45,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:43:45,530 INFO L87 Difference]: Start difference. First operand 177 states and 231 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 17:43:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:43:45,920 INFO L93 Difference]: Finished difference Result 185 states and 239 transitions. [2025-03-08 17:43:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:43:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2025-03-08 17:43:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:43:45,923 INFO L225 Difference]: With dead ends: 185 [2025-03-08 17:43:45,923 INFO L226 Difference]: Without dead ends: 183 [2025-03-08 17:43:45,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:43:45,923 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 3 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 17:43:45,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1111 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 17:43:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-08 17:43:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2025-03-08 17:43:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.158878504672897) internal successors, (124), 109 states have internal predecessors, (124), 56 states have call successors, (56), 18 states have call predecessors, (56), 18 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2025-03-08 17:43:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 236 transitions. [2025-03-08 17:43:45,937 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 236 transitions. Word has length 174 [2025-03-08 17:43:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:43:45,937 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 236 transitions. [2025-03-08 17:43:45,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 17:43:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 236 transitions. [2025-03-08 17:43:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-03-08 17:43:45,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:43:45,939 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:43:45,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:43:45,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:43:45,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:43:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash 784023101, now seen corresponding path program 3 times [2025-03-08 17:43:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:43:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076371919] [2025-03-08 17:43:45,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:43:45,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:43:49,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 189 statements into 10 equivalence classes. [2025-03-08 17:43:50,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 47 of 189 statements. [2025-03-08 17:43:50,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:43:50,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:43:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2025-03-08 17:43:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:43:51,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076371919] [2025-03-08 17:43:51,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076371919] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:43:51,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650452758] [2025-03-08 17:43:51,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:43:51,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:43:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:43:51,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:43:51,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 17:43:55,788 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 189 statements into 10 equivalence classes.