./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.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_init_static_harness.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 5218740bc18d67a03fb6ada79d678262e4837698e28e927d44dbd2d60e2f84aa --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:45:42,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:45:42,472 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 17:45:42,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:45:42,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:45:42,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:45:42,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:45:42,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:45:42,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:45:42,500 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:45:42,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:45:42,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:45:42,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:45:42,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:45:42,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:45:42,503 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:45:42,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:45:42,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:45:42,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:45:42,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:45:42,504 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:45:42,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:45:42,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:45:42,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:45:42,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:45:42,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:45:42,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:45:42,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:45:42,505 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 -> 5218740bc18d67a03fb6ada79d678262e4837698e28e927d44dbd2d60e2f84aa [2025-03-08 17:45:42,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:45:42,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:45:42,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:45:42,752 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:45:42,752 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:45:42,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2025-03-08 17:45:43,923 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6449513e/3e6e9ca36b9b495792ea7f44a11bd51c/FLAGdaeb11568 [2025-03-08 17:45:44,368 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:45:44,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_static_harness.i [2025-03-08 17:45:44,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6449513e/3e6e9ca36b9b495792ea7f44a11bd51c/FLAGdaeb11568 [2025-03-08 17:45:44,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6449513e/3e6e9ca36b9b495792ea7f44a11bd51c [2025-03-08 17:45:44,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:45:44,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:45:44,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:45:44,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:45:44,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:45:44,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:45:44" (1/1) ... [2025-03-08 17:45:44,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c164a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:44, skipping insertion in model container [2025-03-08 17:45:44,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:45:44" (1/1) ... [2025-03-08 17:45:44,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:45:44,704 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_init_static_harness.i[4500,4513] [2025-03-08 17:45:44,708 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_init_static_harness.i[4560,4573] [2025-03-08 17:45:45,186 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,187 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,188 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,188 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,189 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,200 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,200 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,201 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,202 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,202 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,202 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,508 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,513 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:45:45,545 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:45:45,555 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_init_static_harness.i[4500,4513] [2025-03-08 17:45:45,555 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_init_static_harness.i[4560,4573] [2025-03-08 17:45:45,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,598 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,606 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,606 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,607 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,607 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,608 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,608 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,609 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,609 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,689 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,692 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 17:45:45,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:45:45,805 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:45:45,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45 WrapperNode [2025-03-08 17:45:45,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:45:45,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:45:45,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:45:45,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:45:45,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,892 INFO L138 Inliner]: procedures = 670, calls = 1248, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 162 [2025-03-08 17:45:45,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:45:45,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:45:45,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:45:45,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:45:45,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,924 INFO L175 MemorySlicer]: Split 45 memory accesses to 5 slices as follows [2, 5, 4, 28, 6]. 62 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 0, 6, 0]. The 7 writes are split as follows [0, 0, 0, 5, 2]. [2025-03-08 17:45:45,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,943 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:45:45,965 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:45:45,965 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:45:45,966 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:45:45,967 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (1/1) ... [2025-03-08 17:45:45,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:45:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:45:45,994 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 17:45:45,997 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 17:45:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 17:45:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-08 17:45:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-08 17:45:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 17:45:46,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 17:45:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:45:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 17:45:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-08 17:45:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-08 17:45:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-08 17:45:46,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-08 17:45:46,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-08 17:45:46,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 17:45:46,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-08 17:45:46,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-08 17:45:46,022 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 17:45:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 17:45:46,258 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:45:46,260 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:45:46,298 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-08 17:45:46,356 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 17:45:46,373 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-08 17:45:46,398 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-08 17:45:46,400 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-08 17:45:46,576 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2025-03-08 17:45:46,576 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:45:46,590 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:45:46,590 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:45:46,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:45:46 BoogieIcfgContainer [2025-03-08 17:45:46,590 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:45:46,592 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:45:46,592 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:45:46,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:45:46,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:45:44" (1/3) ... [2025-03-08 17:45:46,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:45:46, skipping insertion in model container [2025-03-08 17:45:46,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:45:45" (2/3) ... [2025-03-08 17:45:46,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:45:46, skipping insertion in model container [2025-03-08 17:45:46,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:45:46" (3/3) ... [2025-03-08 17:45:46,613 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_static_harness.i [2025-03-08 17:45:46,623 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:45:46,624 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_init_static_harness.i that has 11 procedures, 113 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 17:45:46,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:45:46,680 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;@20c34fd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:45:46,680 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 17:45:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 68 states have (on average 1.161764705882353) internal successors, (79), 69 states have internal predecessors, (79), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 17:45:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 17:45:46,692 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:45:46,693 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2025-03-08 17:45:46,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:45:46,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:45:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash 940409286, now seen corresponding path program 1 times [2025-03-08 17:45:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:45:46,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009753459] [2025-03-08 17:45:46,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:45:46,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 17:45:46,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 17:45:46,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:46,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 17:45:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:45:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009753459] [2025-03-08 17:45:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009753459] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:45:47,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702808011] [2025-03-08 17:45:47,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:47,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:45:47,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:45:47,072 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 17:45:47,074 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 17:45:47,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 17:45:47,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 17:45:47,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:47,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:47,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 17:45:47,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:45:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 17:45:47,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:45:47,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702808011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:45:47,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:45:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 17:45:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760404473] [2025-03-08 17:45:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:45:47,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 17:45:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:45:47,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 17:45:47,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 17:45:47,362 INFO L87 Difference]: Start difference. First operand has 113 states, 68 states have (on average 1.161764705882353) internal successors, (79), 69 states have internal predecessors, (79), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 17:45:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:45:47,382 INFO L93 Difference]: Finished difference Result 219 states and 302 transitions. [2025-03-08 17:45:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 17:45:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2025-03-08 17:45:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:45:47,391 INFO L225 Difference]: With dead ends: 219 [2025-03-08 17:45:47,392 INFO L226 Difference]: Without dead ends: 105 [2025-03-08 17:45:47,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 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 17:45:47,400 INFO L435 NwaCegarLoop]: 143 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, 143 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 17:45:47,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:45:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-08 17:45:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-08 17:45:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 63 states have internal predecessors, (70), 33 states have call successors, (33), 10 states have call predecessors, (33), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2025-03-08 17:45:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2025-03-08 17:45:47,438 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 99 [2025-03-08 17:45:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:45:47,439 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2025-03-08 17:45:47,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 17:45:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2025-03-08 17:45:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 17:45:47,442 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:45:47,442 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2025-03-08 17:45:47,451 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 17:45:47,643 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 17:45:47,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:45:47,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:45:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1790193371, now seen corresponding path program 1 times [2025-03-08 17:45:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:45:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780658481] [2025-03-08 17:45:47,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:45:47,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 17:45:47,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 17:45:47,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:47,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-08 17:45:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:45:48,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780658481] [2025-03-08 17:45:48,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780658481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:45:48,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:45:48,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:45:48,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372579869] [2025-03-08 17:45:48,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:45:48,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:45:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:45:48,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:45:48,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:45:48,160 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-08 17:45:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:45:48,285 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2025-03-08 17:45:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:45:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2025-03-08 17:45:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:45:48,287 INFO L225 Difference]: With dead ends: 174 [2025-03-08 17:45:48,288 INFO L226 Difference]: Without dead ends: 105 [2025-03-08 17:45:48,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:45:48,289 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 31 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 17:45:48,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 525 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 17:45:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-08 17:45:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-03-08 17:45:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 63 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2025-03-08 17:45:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2025-03-08 17:45:48,307 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 99 [2025-03-08 17:45:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:45:48,307 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2025-03-08 17:45:48,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-08 17:45:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2025-03-08 17:45:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-08 17:45:48,312 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:45:48,312 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 17:45:48,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:45:48,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:45:48,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:45:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1797282166, now seen corresponding path program 1 times [2025-03-08 17:45:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:45:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167958622] [2025-03-08 17:45:48,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:45:48,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-08 17:45:48,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-08 17:45:48,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:48,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-03-08 17:45:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:45:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167958622] [2025-03-08 17:45:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167958622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:45:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:45:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-08 17:45:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805855089] [2025-03-08 17:45:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:45:50,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 17:45:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:45:50,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 17:45:50,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:45:50,689 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-08 17:45:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:45:51,796 INFO L93 Difference]: Finished difference Result 193 states and 242 transitions. [2025-03-08 17:45:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-08 17:45:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 114 [2025-03-08 17:45:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:45:51,799 INFO L225 Difference]: With dead ends: 193 [2025-03-08 17:45:51,799 INFO L226 Difference]: Without dead ends: 126 [2025-03-08 17:45:51,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2025-03-08 17:45:51,802 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 120 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:45:51,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 668 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 17:45:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-03-08 17:45:51,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2025-03-08 17:45:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 64 states have (on average 1.109375) internal successors, (71), 66 states have internal predecessors, (71), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 17:45:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 136 transitions. [2025-03-08 17:45:51,824 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 136 transitions. Word has length 114 [2025-03-08 17:45:51,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:45:51,825 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 136 transitions. [2025-03-08 17:45:51,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 7 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-08 17:45:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 136 transitions. [2025-03-08 17:45:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 17:45:51,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:45:51,826 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 17:45:51,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:45:51,826 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:45:51,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:45:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1034637320, now seen corresponding path program 1 times [2025-03-08 17:45:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:45:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891055283] [2025-03-08 17:45:51,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:45:51,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 17:45:51,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 17:45:51,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:51,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-08 17:45:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:45:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891055283] [2025-03-08 17:45:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891055283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:45:52,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:45:52,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:45:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515216282] [2025-03-08 17:45:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:45:52,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:45:52,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:45:52,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:45:52,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:45:52,392 INFO L87 Difference]: Start difference. First operand 108 states and 136 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-08 17:45:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:45:52,464 INFO L93 Difference]: Finished difference Result 185 states and 229 transitions. [2025-03-08 17:45:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:45:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 116 [2025-03-08 17:45:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:45:52,466 INFO L225 Difference]: With dead ends: 185 [2025-03-08 17:45:52,466 INFO L226 Difference]: Without dead ends: 115 [2025-03-08 17:45:52,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:45:52,466 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 6 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 17:45:52,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 483 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 17:45:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-08 17:45:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2025-03-08 17:45:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 17:45:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2025-03-08 17:45:52,486 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 116 [2025-03-08 17:45:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:45:52,486 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2025-03-08 17:45:52,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-08 17:45:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2025-03-08 17:45:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 17:45:52,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:45:52,490 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 17:45:52,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:45:52,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:45:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:45:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1452875513, now seen corresponding path program 1 times [2025-03-08 17:45:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:45:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747675313] [2025-03-08 17:45:52,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:45:52,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 17:45:52,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 17:45:52,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:52,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 17:45:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770009724] [2025-03-08 17:45:52,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:45:52,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:45:52,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:45:52,661 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 17:45:52,663 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 17:45:52,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 17:45:52,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 17:45:52,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:45:52,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:45:52,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 118 conjuncts are in the unsatisfiable core [2025-03-08 17:45:53,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:45:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 17:45:53,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2025-03-08 17:46:08,797 INFO L349 Elim1Store]: treesize reduction 110, result has 29.9 percent of original size [2025-03-08 17:46:08,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 107 treesize of output 152 [2025-03-08 17:46:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 24 proven. 31 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-03-08 17:46:09,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:46:14,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:46:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747675313] [2025-03-08 17:46:14,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 17:46:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770009724] [2025-03-08 17:46:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770009724] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:46:14,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:46:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2025-03-08 17:46:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583109672] [2025-03-08 17:46:14,598 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 17:46:14,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 17:46:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:46:14,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 17:46:14,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=743, Unknown=4, NotChecked=0, Total=812 [2025-03-08 17:46:14,600 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 25 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 9 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2025-03-08 17:46:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 17:46:20,639 INFO L93 Difference]: Finished difference Result 146 states and 184 transitions. [2025-03-08 17:46:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 17:46:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 9 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 116 [2025-03-08 17:46:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 17:46:20,641 INFO L225 Difference]: With dead ends: 146 [2025-03-08 17:46:20,641 INFO L226 Difference]: Without dead ends: 144 [2025-03-08 17:46:20,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=207, Invalid=2339, Unknown=4, NotChecked=0, Total=2550 [2025-03-08 17:46:20,644 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 162 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 125 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 17:46:20,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 995 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2198 Invalid, 2 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 17:46:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-08 17:46:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2025-03-08 17:46:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 83 states have (on average 1.144578313253012) internal successors, (95), 86 states have internal predecessors, (95), 34 states have call successors, (34), 11 states have call predecessors, (34), 13 states have return successors, (38), 33 states have call predecessors, (38), 32 states have call successors, (38) [2025-03-08 17:46:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2025-03-08 17:46:20,661 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 116 [2025-03-08 17:46:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 17:46:20,662 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2025-03-08 17:46:20,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 9 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2025-03-08 17:46:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2025-03-08 17:46:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-08 17:46:20,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 17:46:20,663 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 17:46:20,673 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 17:46:20,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:46:20,868 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:46:20,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:46:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -905554601, now seen corresponding path program 1 times [2025-03-08 17:46:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:46:20,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827082131] [2025-03-08 17:46:20,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:46:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:46:20,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 17:46:21,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 17:46:21,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:46:21,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 17:46:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150564737] [2025-03-08 17:46:21,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:46:21,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:46:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:46:21,009 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 17:46:21,012 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 17:46:21,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-08 17:46:21,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-08 17:46:21,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:46:21,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:46:21,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 181 conjuncts are in the unsatisfiable core [2025-03-08 17:46:21,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:46:21,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-08 17:46:21,445 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-08 17:46:21,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-03-08 17:46:21,828 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2025-03-08 17:46:21,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2025-03-08 17:46:21,957 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2025-03-08 17:46:21,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2025-03-08 17:46:22,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2025-03-08 17:46:22,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-08 17:46:33,533 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 17:46:45,554 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 17:47:01,617 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-08 17:47:13,629 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)