./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:57:03,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:57:03,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 16:57:03,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:57:03,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:57:03,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:57:03,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:57:03,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:57:03,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:57:03,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:57:03,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:57:03,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:57:03,673 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:57:03,674 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:57:03,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:57:03,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:57:03,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:57:03,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:57:03,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:57:03,675 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-jdk21/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 -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2025-01-09 16:57:03,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:57:03,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:57:03,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:57:03,899 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:57:03,900 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:57:03,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-01-09 16:57:05,130 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/464ca4ebd/9a2032e495324d249ac159ec4c487dfd/FLAG2104a3f23 [2025-01-09 16:57:05,565 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:57:05,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-01-09 16:57:05,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/464ca4ebd/9a2032e495324d249ac159ec4c487dfd/FLAG2104a3f23 [2025-01-09 16:57:05,704 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/464ca4ebd/9a2032e495324d249ac159ec4c487dfd [2025-01-09 16:57:05,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:57:05,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:57:05,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:57:05,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:57:05,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:57:05,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:57:05" (1/1) ... [2025-01-09 16:57:05,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d735ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:05, skipping insertion in model container [2025-01-09 16:57:05,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:57:05" (1/1) ... [2025-01-09 16:57:05,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:57:05,931 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2025-01-09 16:57:05,934 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2025-01-09 16:57:06,386 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,387 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,387 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,388 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,391 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,404 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,404 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,406 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,407 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,408 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,410 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,411 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,411 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,745 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,749 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:57:06,818 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:57:06,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2025-01-09 16:57:06,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2025-01-09 16:57:06,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,865 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,869 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,870 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,871 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,871 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,871 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,872 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,872 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,872 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,967 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,970 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:57:06,977 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2025-01-09 16:57:06,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:57:07,139 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:57:07,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07 WrapperNode [2025-01-09 16:57:07,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:57:07,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:57:07,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:57:07,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:57:07,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,217 INFO L138 Inliner]: procedures = 680, calls = 1679, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2025-01-09 16:57:07,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:57:07,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:57:07,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:57:07,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:57:07,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,296 INFO L175 MemorySlicer]: Split 323 memory accesses to 6 slices as follows [238, 2, 3, 63, 11, 6]. 74 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 1, 10, 5, 0]. The 240 writes are split as follows [232, 0, 1, 5, 0, 2]. [2025-01-09 16:57:07,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:57:07,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:57:07,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:57:07,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:57:07,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (1/1) ... [2025-01-09 16:57:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:57:07,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:07,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:57:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2025-01-09 16:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2025-01-09 16:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-01-09 16:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-01-09 16:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-01-09 16:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-01-09 16:57:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 16:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-01-09 16:57:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 16:57:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 16:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 16:57:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 16:57:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 16:57:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-01-09 16:57:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:57:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:57:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-01-09 16:57:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-01-09 16:57:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-01-09 16:57:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-01-09 16:57:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-01-09 16:57:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-01-09 16:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 16:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-01-09 16:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-01-09 16:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 16:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2025-01-09 16:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2025-01-09 16:57:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:57:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 16:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 16:57:07,625 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:57:07,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:57:13,415 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2025-01-09 16:57:13,416 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:57:13,431 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:57:13,434 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:57:13,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:57:13 BoogieIcfgContainer [2025-01-09 16:57:13,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:57:13,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:57:13,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:57:13,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:57:13,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:57:05" (1/3) ... [2025-01-09 16:57:13,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c2e1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:57:13, skipping insertion in model container [2025-01-09 16:57:13,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:57:07" (2/3) ... [2025-01-09 16:57:13,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c2e1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:57:13, skipping insertion in model container [2025-01-09 16:57:13,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:57:13" (3/3) ... [2025-01-09 16:57:13,442 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2025-01-09 16:57:13,454 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:57:13,455 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_front_harness.i that has 17 procedures, 185 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 16:57:13,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:57:13,507 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;@72f4d629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:57:13,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 16:57:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-01-09 16:57:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 16:57:13,518 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:13,519 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-01-09 16:57:13,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1369416434, now seen corresponding path program 1 times [2025-01-09 16:57:13,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:13,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953755316] [2025-01-09 16:57:13,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:17,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:18,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:18,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:18,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-01-09 16:57:18,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953755316] [2025-01-09 16:57:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953755316] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828784126] [2025-01-09 16:57:18,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:18,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:18,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:18,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:57:18,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:57:22,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:23,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:23,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:23,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:23,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 16:57:23,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:57:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-01-09 16:57:23,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:57:23,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828784126] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:57:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 16:57:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700182951] [2025-01-09 16:57:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:23,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:57:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:23,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:57:23,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:57:23,188 INFO L87 Difference]: Start difference. First operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-01-09 16:57:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:23,217 INFO L93 Difference]: Finished difference Result 363 states and 519 transitions. [2025-01-09 16:57:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:57:23,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2025-01-09 16:57:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:23,223 INFO L225 Difference]: With dead ends: 363 [2025-01-09 16:57:23,224 INFO L226 Difference]: Without dead ends: 180 [2025-01-09 16:57:23,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:57:23,228 INFO L435 NwaCegarLoop]: 244 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, 244 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 [2025-01-09 16:57:23,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:57:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-01-09 16:57:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2025-01-09 16:57:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-01-09 16:57:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2025-01-09 16:57:23,263 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2025-01-09 16:57:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:23,263 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2025-01-09 16:57:23,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-01-09 16:57:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2025-01-09 16:57:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 16:57:23,265 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:23,265 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-01-09 16:57:23,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:57:23,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 16:57:23,466 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:23,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -293931922, now seen corresponding path program 1 times [2025-01-09 16:57:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127368944] [2025-01-09 16:57:23,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:27,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:27,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:27,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:27,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 16:57:28,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127368944] [2025-01-09 16:57:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127368944] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083195838] [2025-01-09 16:57:28,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:28,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:57:28,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:57:32,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:32,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:32,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:32,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:32,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:57:32,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:57:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 16:57:33,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:57:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083195838] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:57:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-01-09 16:57:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608544493] [2025-01-09 16:57:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:57:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:33,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:57:33,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:57:33,255 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-01-09 16:57:35,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:35,383 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2025-01-09 16:57:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:57:35,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2025-01-09 16:57:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:35,386 INFO L225 Difference]: With dead ends: 325 [2025-01-09 16:57:35,386 INFO L226 Difference]: Without dead ends: 182 [2025-01-09 16:57:35,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:57:35,388 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 253 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:35,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 722 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-09 16:57:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-01-09 16:57:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2025-01-09 16:57:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2025-01-09 16:57:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2025-01-09 16:57:35,401 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2025-01-09 16:57:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:35,401 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2025-01-09 16:57:35,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-01-09 16:57:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2025-01-09 16:57:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-09 16:57:35,403 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:35,404 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:57:35,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:57:35,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:35,606 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:35,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2116490439, now seen corresponding path program 1 times [2025-01-09 16:57:35,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:35,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107275005] [2025-01-09 16:57:35,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:35,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:39,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 16:57:39,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 16:57:39,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:39,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 16:57:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107275005] [2025-01-09 16:57:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107275005] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584107102] [2025-01-09 16:57:40,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:40,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:40,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:40,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:57:40,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:57:44,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 16:57:45,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 16:57:45,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:45,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:45,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 4286 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:57:45,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:57:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-01-09 16:57:46,243 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:57:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584107102] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:57:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-01-09 16:57:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820200704] [2025-01-09 16:57:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:46,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:57:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:46,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:57:46,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:57:46,246 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 16:57:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:50,065 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2025-01-09 16:57:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:57:50,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2025-01-09 16:57:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:50,072 INFO L225 Difference]: With dead ends: 317 [2025-01-09 16:57:50,072 INFO L226 Difference]: Without dead ends: 182 [2025-01-09 16:57:50,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:57:50,073 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 273 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:50,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 975 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-01-09 16:57:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-01-09 16:57:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2025-01-09 16:57:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2025-01-09 16:57:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2025-01-09 16:57:50,109 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2025-01-09 16:57:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:50,110 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2025-01-09 16:57:50,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 16:57:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2025-01-09 16:57:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-09 16:57:50,118 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:50,118 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 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] [2025-01-09 16:57:50,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:57:50,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:50,319 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:50,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1678054398, now seen corresponding path program 2 times [2025-01-09 16:57:50,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:50,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608302580] [2025-01-09 16:57:50,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:57:50,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:54,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-01-09 16:57:54,525 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 16:57:54,525 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:57:54,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-09 16:57:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608302580] [2025-01-09 16:57:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608302580] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:55,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:57:55,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:57:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112657603] [2025-01-09 16:57:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:55,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:57:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:55,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:57:55,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:57:55,913 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 16:57:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:58,170 INFO L93 Difference]: Finished difference Result 326 states and 450 transitions. [2025-01-09 16:57:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:57:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2025-01-09 16:57:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:58,172 INFO L225 Difference]: With dead ends: 326 [2025-01-09 16:57:58,173 INFO L226 Difference]: Without dead ends: 194 [2025-01-09 16:57:58,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:57:58,174 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 86 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:58,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1555 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-09 16:57:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-01-09 16:57:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2025-01-09 16:57:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 115 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2025-01-09 16:57:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2025-01-09 16:57:58,195 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 114 [2025-01-09 16:57:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:58,196 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2025-01-09 16:57:58,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-01-09 16:57:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2025-01-09 16:57:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-01-09 16:57:58,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:58,198 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2025-01-09 16:57:58,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:57:58,198 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:58,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -533874894, now seen corresponding path program 1 times [2025-01-09 16:57:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169054126] [2025-01-09 16:57:58,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:58:01,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-01-09 16:58:03,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-01-09 16:58:03,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:58:03,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 16:58:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606592630] [2025-01-09 16:58:03,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:58:03,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:58:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:58:03,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:58:03,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:58:07,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes.