./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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_linked_list_front_harness_negated.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 99fc5ed4adc13b7c0d2c2f3c2054604e6222b21165bf21f460d9833f96bf614d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:52:12,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:52:12,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:52:12,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:52:12,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:52:12,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:52:12,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:52:12,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:52:12,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:52:12,654 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:52:12,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:52:12,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:52:12,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:52:12,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:52:12,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:52:12,656 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:12,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:52:12,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:52:12,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:52:12,657 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 -> 99fc5ed4adc13b7c0d2c2f3c2054604e6222b21165bf21f460d9833f96bf614d [2025-02-08 01:52:12,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:52:12,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:52:12,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:52:12,911 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:52:12,912 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:52:12,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness_negated.i [2025-02-08 01:52:14,056 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/624855bcc/bb0ada7fdddb4178a26b5af64fac8305/FLAG7d2e7ffd0 [2025-02-08 01:52:14,542 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:52:14,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness_negated.i [2025-02-08 01:52:14,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/624855bcc/bb0ada7fdddb4178a26b5af64fac8305/FLAG7d2e7ffd0 [2025-02-08 01:52:14,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/624855bcc/bb0ada7fdddb4178a26b5af64fac8305 [2025-02-08 01:52:14,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:52:14,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:52:14,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:14,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:52:14,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:52:14,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:14" (1/1) ... [2025-02-08 01:52:14,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f67e469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:14, skipping insertion in model container [2025-02-08 01:52:14,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:14" (1/1) ... [2025-02-08 01:52:14,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:52:14,936 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_linked_list_front_harness_negated.i[4495,4508] [2025-02-08 01:52:14,943 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_linked_list_front_harness_negated.i[4555,4568] [2025-02-08 01:52:15,326 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,326 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,328 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,343 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,344 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,344 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,349 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,350 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,350 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,350 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,624 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_linked_list_front_harness_negated.i[150880,150893] [2025-02-08 01:52:15,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:15,638 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:52:15,649 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_linked_list_front_harness_negated.i[4495,4508] [2025-02-08 01:52:15,649 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_linked_list_front_harness_negated.i[4555,4568] [2025-02-08 01:52:15,693 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,693 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,693 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,694 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,694 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,700 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,701 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,701 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,702 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,702 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,703 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,703 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,703 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:15,792 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_linked_list_front_harness_negated.i[150880,150893] [2025-02-08 01:52:15,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:15,940 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:52:15,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15 WrapperNode [2025-02-08 01:52:15,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:15,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:15,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:52:15,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:52:15,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,022 INFO L138 Inliner]: procedures = 668, calls = 1043, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 129 [2025-02-08 01:52:16,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:16,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:52:16,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:52:16,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:52:16,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,047 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 5, 20]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2025-02-08 01:52:16,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,054 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:52:16,061 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:52:16,061 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:52:16,062 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:52:16,062 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (1/1) ... [2025-02-08 01:52:16,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:16,084 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) [2025-02-08 01:52:16,094 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 [2025-02-08 01:52:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:52:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:52:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-02-08 01:52:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2025-02-08 01:52:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2025-02-08 01:52:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:52:16,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2025-02-08 01:52:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:52:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-08 01:52:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-08 01:52:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:52:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:52:16,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:52:16,272 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:52:16,274 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:52:16,323 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4729: havoc #t~mem317.base, #t~mem317.offset;havoc #t~short318;havoc #t~mem319.base, #t~mem319.offset;havoc #t~mem320.base, #t~mem320.offset;havoc #t~short321; [2025-02-08 01:52:16,326 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-08 01:52:16,337 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4718: havoc #t~mem312.base, #t~mem312.offset;havoc #t~short313;havoc #t~mem314.base, #t~mem314.offset;havoc #t~mem315.base, #t~mem315.offset;havoc #t~short316; [2025-02-08 01:52:16,463 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700-1: #t~ret311#1 := aws_linked_list_is_valid_deep_#res#1;havoc aws_linked_list_is_valid_deep_#t~ret322#1, aws_linked_list_is_valid_deep_#t~mem323#1.base, aws_linked_list_is_valid_deep_#t~mem323#1.offset, aws_linked_list_is_valid_deep_~list#1.base, aws_linked_list_is_valid_deep_~list#1.offset, aws_linked_list_is_valid_deep_~temp~0#1.base, aws_linked_list_is_valid_deep_~temp~0#1.offset, aws_linked_list_is_valid_deep_~head_reaches_tail~0#1;havoc aws_linked_list_is_valid_deep_#in~list#1.base, aws_linked_list_is_valid_deep_#in~list#1.offset;assume { :end_inline_aws_linked_list_is_valid_deep } true;#res#1 := (if 0 == #t~ret311#1 % 256 then 0 else 1);havoc #t~ret311#1; [2025-02-08 01:52:16,463 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-02-08 01:52:16,467 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4685: havoc #t~mem302.base, #t~mem302.offset; [2025-02-08 01:52:16,500 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2025-02-08 01:52:16,500 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:52:16,512 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:52:16,512 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:52:16,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:16 BoogieIcfgContainer [2025-02-08 01:52:16,512 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:52:16,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:52:16,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:52:16,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:52:16,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:52:14" (1/3) ... [2025-02-08 01:52:16,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acab0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:16, skipping insertion in model container [2025-02-08 01:52:16,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:15" (2/3) ... [2025-02-08 01:52:16,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acab0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:16, skipping insertion in model container [2025-02-08 01:52:16,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:16" (3/3) ... [2025-02-08 01:52:16,519 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness_negated.i [2025-02-08 01:52:16,529 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:52:16,530 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_front_harness_negated.i that has 9 procedures, 93 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-08 01:52:16,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:52:16,578 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;@3fd29e0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:52:16,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:52:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 58 states have (on average 1.293103448275862) internal successors, (75), 60 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 01:52:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:52:16,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:16,592 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-02-08 01:52:16,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:16,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1643575472, now seen corresponding path program 1 times [2025-02-08 01:52:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965277837] [2025-02-08 01:52:16,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:16,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:52:16,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:52:16,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:16,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 01:52:16,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:16,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965277837] [2025-02-08 01:52:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965277837] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:16,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153109405] [2025-02-08 01:52:16,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:16,859 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) [2025-02-08 01:52:16,860 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 [2025-02-08 01:52:16,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:52:17,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:52:17,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:17,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:17,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:52:17,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:52:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 01:52:17,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:52:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153109405] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:52:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:52:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:52:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230152504] [2025-02-08 01:52:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:52:17,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:52:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:52:17,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:52:17,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:52:17,035 INFO L87 Difference]: Start difference. First operand has 93 states, 58 states have (on average 1.293103448275862) internal successors, (75), 60 states have internal predecessors, (75), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 01:52:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:52:17,051 INFO L93 Difference]: Finished difference Result 179 states and 253 transitions. [2025-02-08 01:52:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:52:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2025-02-08 01:52:17,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:52:17,058 INFO L225 Difference]: With dead ends: 179 [2025-02-08 01:52:17,058 INFO L226 Difference]: Without dead ends: 83 [2025-02-08 01:52:17,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:52:17,062 INFO L435 NwaCegarLoop]: 121 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, 121 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 [2025-02-08 01:52:17,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:52:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-08 01:52:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-02-08 01:52:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.196078431372549) internal successors, (61), 52 states have internal predecessors, (61), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 01:52:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2025-02-08 01:52:17,085 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 83 [2025-02-08 01:52:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:52:17,086 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2025-02-08 01:52:17,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 01:52:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2025-02-08 01:52:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:52:17,088 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:17,088 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-02-08 01:52:17,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:52:17,292 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 [2025-02-08 01:52:17,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:17,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash -699240398, now seen corresponding path program 1 times [2025-02-08 01:52:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284279343] [2025-02-08 01:52:17,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:17,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:52:17,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:52:17,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:17,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 01:52:17,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:17,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284279343] [2025-02-08 01:52:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284279343] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:52:17,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:52:17,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:52:17,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695625611] [2025-02-08 01:52:17,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:52:17,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:52:17,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:52:17,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:52:17,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:52:17,921 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-08 01:52:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:52:17,975 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2025-02-08 01:52:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:52:17,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2025-02-08 01:52:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:52:17,977 INFO L225 Difference]: With dead ends: 89 [2025-02-08 01:52:17,977 INFO L226 Difference]: Without dead ends: 87 [2025-02-08 01:52:17,977 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 [2025-02-08 01:52:17,978 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 01:52:17,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 504 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:52:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-08 01:52:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-02-08 01:52:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 01:52:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2025-02-08 01:52:17,994 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 83 [2025-02-08 01:52:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:52:17,994 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2025-02-08 01:52:17,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-08 01:52:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2025-02-08 01:52:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 01:52:17,997 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:17,997 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-02-08 01:52:17,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:52:17,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:17,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1534005942, now seen corresponding path program 1 times [2025-02-08 01:52:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:17,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246511362] [2025-02-08 01:52:17,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:18,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:52:18,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:52:18,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:18,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-02-08 01:52:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246511362] [2025-02-08 01:52:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246511362] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730637434] [2025-02-08 01:52:18,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:18,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:18,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:18,469 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) [2025-02-08 01:52:18,470 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 [2025-02-08 01:52:18,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:52:18,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:52:18,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:18,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:18,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-08 01:52:18,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:52:18,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2025-02-08 01:52:18,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2025-02-08 01:52:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 01:52:20,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:52:33,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2025-02-08 01:52:33,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:33,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:33,088 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:52:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-08 01:52:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730637434] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:33,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:52:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 16] total 33 [2025-02-08 01:52:33,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355806336] [2025-02-08 01:52:33,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:52:33,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:52:33,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:52:33,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:52:33,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=948, Unknown=3, NotChecked=0, Total=1056 [2025-02-08 01:52:33,179 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2025-02-08 01:52:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:52:33,555 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2025-02-08 01:52:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:52:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 97 [2025-02-08 01:52:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:52:33,557 INFO L225 Difference]: With dead ends: 157 [2025-02-08 01:52:33,557 INFO L226 Difference]: Without dead ends: 88 [2025-02-08 01:52:33,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 159 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=115, Invalid=1072, Unknown=3, NotChecked=0, Total=1190 [2025-02-08 01:52:33,559 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 4 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 01:52:33,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1310 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 01:52:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-08 01:52:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-02-08 01:52:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 56 states have internal predecessors, (65), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-08 01:52:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2025-02-08 01:52:33,565 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 97 [2025-02-08 01:52:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:52:33,565 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2025-02-08 01:52:33,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2025-02-08 01:52:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2025-02-08 01:52:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-08 01:52:33,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:33,566 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2025-02-08 01:52:33,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:52:33,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:33,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:33,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1877710485, now seen corresponding path program 1 times [2025-02-08 01:52:33,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:33,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185828630] [2025-02-08 01:52:33,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:33,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:33,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 01:52:33,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 01:52:33,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:33,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-02-08 01:52:34,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185828630] [2025-02-08 01:52:34,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185828630] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67778796] [2025-02-08 01:52:34,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:34,136 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) [2025-02-08 01:52:34,141 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 [2025-02-08 01:52:34,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-08 01:52:34,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 01:52:34,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:34,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:34,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-08 01:52:34,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:52:34,278 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 [2025-02-08 01:52:34,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-08 01:52:34,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2025-02-08 01:52:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2025-02-08 01:52:34,413 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 01:52:34,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2025-02-08 01:52:34,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-08 01:52:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2025-02-08 01:52:34,435 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 01:52:34,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2025-02-08 01:52:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2025-02-08 01:52:34,466 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 01:52:34,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 01:52:34,523 INFO L349 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2025-02-08 01:52:34,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 126 [2025-02-08 01:52:34,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2025-02-08 01:52:34,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:52:34,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 33 [2025-02-08 01:52:34,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 13