./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_node_reset_harness-1.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 6a8b3323a92d99d7113afe189cb74ca3fccfd0743fd857bf4a57e73eb6656833 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 05:16:24,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 05:16:25,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-06 05:16:25,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 05:16:25,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 05:16:25,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 05:16:25,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 05:16:25,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 05:16:25,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 05:16:25,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 05:16:25,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 05:16:25,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 05:16:25,145 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:16:25,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 05:16:25,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 05:16:25,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 05:16:25,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 05:16:25,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 05:16:25,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 05:16:25,146 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 -> 6a8b3323a92d99d7113afe189cb74ca3fccfd0743fd857bf4a57e73eb6656833 [2025-02-06 05:16:25,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 05:16:25,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 05:16:25,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 05:16:25,402 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 05:16:25,402 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 05:16:25,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i [2025-02-06 05:16:26,548 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1323dbb83/b7bc1647094345c09638bd1b80351725/FLAG73c15f985 [2025-02-06 05:16:27,003 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 05:16:27,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness-1.i [2025-02-06 05:16:27,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1323dbb83/b7bc1647094345c09638bd1b80351725/FLAG73c15f985 [2025-02-06 05:16:27,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1323dbb83/b7bc1647094345c09638bd1b80351725 [2025-02-06 05:16:27,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 05:16:27,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 05:16:27,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 05:16:27,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 05:16:27,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 05:16:27,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:16:27" (1/1) ... [2025-02-06 05:16:27,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d99148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:27, skipping insertion in model container [2025-02-06 05:16:27,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:16:27" (1/1) ... [2025-02-06 05:16:27,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 05:16:27,255 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_node_reset_harness-1.i[4500,4513] [2025-02-06 05:16:27,262 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_node_reset_harness-1.i[4560,4573] [2025-02-06 05:16:27,762 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,763 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,763 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,788 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,789 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,791 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,792 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,796 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,796 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,796 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:27,797 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,201 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_node_reset_harness-1.i[150301,150314] [2025-02-06 05:16:28,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:16:28,214 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 05:16:28,224 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_node_reset_harness-1.i[4500,4513] [2025-02-06 05:16:28,224 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_node_reset_harness-1.i[4560,4573] [2025-02-06 05:16:28,262 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,264 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,264 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,272 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,273 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,274 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,274 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,275 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,275 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,276 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,276 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:16:28,353 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_node_reset_harness-1.i[150301,150314] [2025-02-06 05:16:28,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:16:28,503 INFO L204 MainTranslator]: Completed translation [2025-02-06 05:16:28,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28 WrapperNode [2025-02-06 05:16:28,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 05:16:28,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 05:16:28,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 05:16:28,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 05:16:28,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,561 INFO L138 Inliner]: procedures = 668, calls = 1032, calls flagged for inlining = 49, calls inlined = 3, statements flattened = 27 [2025-02-06 05:16:28,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 05:16:28,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 05:16:28,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 05:16:28,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 05:16:28,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,586 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2025-02-06 05:16:28,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 05:16:28,612 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 05:16:28,612 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 05:16:28,612 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 05:16:28,613 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (1/1) ... [2025-02-06 05:16:28,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:16:28,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:28,649 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) [2025-02-06 05:16:28,653 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 [2025-02-06 05:16:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2025-02-06 05:16:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 05:16:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 05:16:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 05:16:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 05:16:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 05:16:28,860 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 05:16:28,862 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 05:16:28,994 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-02-06 05:16:28,995 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 05:16:29,000 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 05:16:29,001 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 05:16:29,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:16:29 BoogieIcfgContainer [2025-02-06 05:16:29,001 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 05:16:29,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 05:16:29,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 05:16:29,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 05:16:29,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:16:27" (1/3) ... [2025-02-06 05:16:29,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379501ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:16:29, skipping insertion in model container [2025-02-06 05:16:29,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:16:28" (2/3) ... [2025-02-06 05:16:29,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379501ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:16:29, skipping insertion in model container [2025-02-06 05:16:29,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:16:29" (3/3) ... [2025-02-06 05:16:29,009 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness-1.i [2025-02-06 05:16:29,051 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 05:16:29,052 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_node_reset_harness-1.i that has 8 procedures, 48 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-06 05:16:29,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 05:16:29,098 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;@40151663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 05:16:29,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 05:16:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 05:16:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 05:16:29,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:29,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:16:29,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:29,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 842897049, now seen corresponding path program 1 times [2025-02-06 05:16:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:29,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33501503] [2025-02-06 05:16:29,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:29,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:29,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 05:16:29,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 05:16:29,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:29,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:29,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33501503] [2025-02-06 05:16:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33501503] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:16:29,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:16:29,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 05:16:29,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53452060] [2025-02-06 05:16:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:16:29,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 05:16:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:29,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 05:16:29,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:16:29,355 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 05:16:29,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:29,381 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2025-02-06 05:16:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 05:16:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2025-02-06 05:16:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:29,390 INFO L225 Difference]: With dead ends: 73 [2025-02-06 05:16:29,390 INFO L226 Difference]: Without dead ends: 35 [2025-02-06 05:16:29,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:16:29,397 INFO L435 NwaCegarLoop]: 44 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, 44 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 [2025-02-06 05:16:29,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:16:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-06 05:16:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-02-06 05:16:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 05:16:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2025-02-06 05:16:29,442 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2025-02-06 05:16:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:29,442 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2025-02-06 05:16:29,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 05:16:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2025-02-06 05:16:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 05:16:29,443 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:29,443 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:16:29,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 05:16:29,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:29,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:29,446 INFO L85 PathProgramCache]: Analyzing trace with hash 153354151, now seen corresponding path program 1 times [2025-02-06 05:16:29,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945629850] [2025-02-06 05:16:29,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:29,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 05:16:29,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 05:16:29,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:29,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:29,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945629850] [2025-02-06 05:16:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945629850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:16:29,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:16:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 05:16:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697237554] [2025-02-06 05:16:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:16:29,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 05:16:29,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:29,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 05:16:29,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 05:16:29,815 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 05:16:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:29,856 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2025-02-06 05:16:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 05:16:29,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2025-02-06 05:16:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:29,858 INFO L225 Difference]: With dead ends: 45 [2025-02-06 05:16:29,859 INFO L226 Difference]: Without dead ends: 43 [2025-02-06 05:16:29,859 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 [2025-02-06 05:16:29,859 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:29,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 176 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:16:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-06 05:16:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2025-02-06 05:16:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2025-02-06 05:16:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2025-02-06 05:16:29,865 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 26 [2025-02-06 05:16:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:29,866 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2025-02-06 05:16:29,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 05:16:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2025-02-06 05:16:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 05:16:29,866 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:29,866 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:16:29,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 05:16:29,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -643962008, now seen corresponding path program 1 times [2025-02-06 05:16:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:29,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672596273] [2025-02-06 05:16:29,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:29,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 05:16:29,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 05:16:29,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:29,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672596273] [2025-02-06 05:16:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672596273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:16:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:16:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 05:16:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644918832] [2025-02-06 05:16:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:16:30,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 05:16:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:30,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 05:16:30,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:16:30,044 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 05:16:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:30,060 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2025-02-06 05:16:30,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 05:16:30,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-02-06 05:16:30,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:30,061 INFO L225 Difference]: With dead ends: 72 [2025-02-06 05:16:30,061 INFO L226 Difference]: Without dead ends: 43 [2025-02-06 05:16:30,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:16:30,063 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:30,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:16:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-06 05:16:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-02-06 05:16:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2025-02-06 05:16:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2025-02-06 05:16:30,072 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 27 [2025-02-06 05:16:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:30,072 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2025-02-06 05:16:30,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 05:16:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2025-02-06 05:16:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-06 05:16:30,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:30,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:16:30,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 05:16:30,073 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:30,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1349990956, now seen corresponding path program 1 times [2025-02-06 05:16:30,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:30,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132151534] [2025-02-06 05:16:30,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:30,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 05:16:30,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 05:16:30,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:30,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:30,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132151534] [2025-02-06 05:16:30,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132151534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65871166] [2025-02-06 05:16:30,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:30,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:30,320 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) [2025-02-06 05:16:30,323 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 [2025-02-06 05:16:30,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 05:16:30,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 05:16:30,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:30,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:30,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 05:16:30,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:30,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 05:16:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:30,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:16:31,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 05:16:31,312 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 16 treesize of output 14 [2025-02-06 05:16:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65871166] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:16:31,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:16:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 10] total 25 [2025-02-06 05:16:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358589208] [2025-02-06 05:16:31,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:16:31,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 05:16:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:31,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 05:16:31,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2025-02-06 05:16:31,415 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:32,130 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2025-02-06 05:16:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 05:16:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 28 [2025-02-06 05:16:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:32,131 INFO L225 Difference]: With dead ends: 79 [2025-02-06 05:16:32,131 INFO L226 Difference]: Without dead ends: 50 [2025-02-06 05:16:32,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 05:16:32,132 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:32,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 375 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 05:16:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-06 05:16:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2025-02-06 05:16:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:16:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2025-02-06 05:16:32,151 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 28 [2025-02-06 05:16:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:32,151 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2025-02-06 05:16:32,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2025-02-06 05:16:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 05:16:32,152 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:32,152 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-06 05:16:32,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 05:16:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:32,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -113394169, now seen corresponding path program 1 times [2025-02-06 05:16:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44427095] [2025-02-06 05:16:32,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:32,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 05:16:32,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 05:16:32,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:32,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 05:16:32,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44427095] [2025-02-06 05:16:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44427095] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235275784] [2025-02-06 05:16:32,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:16:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:32,579 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) [2025-02-06 05:16:32,581 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 [2025-02-06 05:16:32,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 05:16:32,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 05:16:32,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:16:32,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:32,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-06 05:16:32,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:32,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 05:16:32,769 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 0 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 05:16:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:33,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:16:33,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-06 05:16:33,517 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 27 treesize of output 23 [2025-02-06 05:16:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:33,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235275784] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:16:33,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:16:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 12] total 30 [2025-02-06 05:16:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77345917] [2025-02-06 05:16:33,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:16:33,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 05:16:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:33,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 05:16:33,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2025-02-06 05:16:33,565 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 27 states have internal predecessors, (56), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:34,314 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2025-02-06 05:16:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 05:16:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 27 states have internal predecessors, (56), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 31 [2025-02-06 05:16:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:34,316 INFO L225 Difference]: With dead ends: 88 [2025-02-06 05:16:34,316 INFO L226 Difference]: Without dead ends: 55 [2025-02-06 05:16:34,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 05:16:34,317 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 67 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:34,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 421 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 05:16:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-06 05:16:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2025-02-06 05:16:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:16:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2025-02-06 05:16:34,324 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 31 [2025-02-06 05:16:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:34,324 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2025-02-06 05:16:34,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 27 states have internal predecessors, (56), 6 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2025-02-06 05:16:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 05:16:34,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:34,325 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:16:34,332 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 [2025-02-06 05:16:34,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:34,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:34,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2054541522, now seen corresponding path program 2 times [2025-02-06 05:16:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062974882] [2025-02-06 05:16:34,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 05:16:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:34,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 05:16:34,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 05:16:34,557 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 05:16:34,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 05:16:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062974882] [2025-02-06 05:16:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062974882] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019272648] [2025-02-06 05:16:34,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 05:16:34,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:34,731 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) [2025-02-06 05:16:34,736 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 [2025-02-06 05:16:34,790 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 05:16:34,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 05:16:34,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 05:16:34,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:34,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-06 05:16:34,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:34,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 05:16:34,911 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 0 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 05:16:34,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:34,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2025-02-06 05:16:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:35,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:16:36,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2025-02-06 05:16:36,193 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 36 treesize of output 32 [2025-02-06 05:16:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019272648] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:16:36,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:16:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 16] total 38 [2025-02-06 05:16:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692786575] [2025-02-06 05:16:36,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:16:36,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-06 05:16:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:36,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-06 05:16:36,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2025-02-06 05:16:36,247 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 38 states, 36 states have (on average 1.75) internal successors, (63), 34 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:37,488 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2025-02-06 05:16:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 05:16:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 1.75) internal successors, (63), 34 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 34 [2025-02-06 05:16:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:37,489 INFO L225 Difference]: With dead ends: 96 [2025-02-06 05:16:37,489 INFO L226 Difference]: Without dead ends: 61 [2025-02-06 05:16:37,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=286, Invalid=3374, Unknown=0, NotChecked=0, Total=3660 [2025-02-06 05:16:37,492 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:37,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 488 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 05:16:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-06 05:16:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2025-02-06 05:16:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 40 states have internal predecessors, (47), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:16:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2025-02-06 05:16:37,501 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 34 [2025-02-06 05:16:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:37,502 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2025-02-06 05:16:37,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 1.75) internal successors, (63), 34 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:16:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2025-02-06 05:16:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 05:16:37,503 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:37,503 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-06 05:16:37,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 05:16:37,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:37,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:37,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1164303739, now seen corresponding path program 3 times [2025-02-06 05:16:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10881506] [2025-02-06 05:16:37,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 05:16:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:37,728 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-06 05:16:37,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 37 statements. [2025-02-06 05:16:37,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 05:16:37,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10881506] [2025-02-06 05:16:37,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10881506] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000829129] [2025-02-06 05:16:37,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 05:16:37,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:37,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:38,005 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) [2025-02-06 05:16:38,009 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 [2025-02-06 05:16:38,075 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-06 05:16:38,139 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 37 statements. [2025-02-06 05:16:38,139 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 05:16:38,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:38,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 05:16:38,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:38,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:16:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:38,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000829129] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:16:38,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:16:38,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-02-06 05:16:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728994339] [2025-02-06 05:16:38,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:16:38,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 05:16:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:38,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 05:16:38,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2025-02-06 05:16:38,297 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 05:16:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:38,493 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2025-02-06 05:16:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 05:16:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2025-02-06 05:16:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:38,495 INFO L225 Difference]: With dead ends: 99 [2025-02-06 05:16:38,495 INFO L226 Difference]: Without dead ends: 60 [2025-02-06 05:16:38,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2025-02-06 05:16:38,496 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:38,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 292 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:16:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-06 05:16:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-06 05:16:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:16:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2025-02-06 05:16:38,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 37 [2025-02-06 05:16:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:38,514 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2025-02-06 05:16:38,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 05:16:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2025-02-06 05:16:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 05:16:38,515 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:38,515 INFO L218 NwaCegarLoop]: trace histogram [10, 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] [2025-02-06 05:16:38,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 05:16:38,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 05:16:38,716 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:38,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash -462730491, now seen corresponding path program 4 times [2025-02-06 05:16:38,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758383848] [2025-02-06 05:16:38,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 05:16:38,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:38,747 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-06 05:16:38,785 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 05:16:38,789 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 05:16:38,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:39,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758383848] [2025-02-06 05:16:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758383848] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697824522] [2025-02-06 05:16:39,308 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 05:16:39,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:39,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:39,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:16:39,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 05:16:39,388 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-06 05:16:39,588 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 05:16:39,589 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 05:16:39,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:39,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 05:16:39,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:39,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:16:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 05:16:40,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697824522] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:16:40,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:16:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2025-02-06 05:16:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767271165] [2025-02-06 05:16:40,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:16:40,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-06 05:16:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:16:40,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-06 05:16:40,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 05:16:40,279 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 05:16:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:16:40,576 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2025-02-06 05:16:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 05:16:40,577 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2025-02-06 05:16:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:16:40,578 INFO L225 Difference]: With dead ends: 104 [2025-02-06 05:16:40,578 INFO L226 Difference]: Without dead ends: 65 [2025-02-06 05:16:40,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=434, Invalid=1288, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 05:16:40,579 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:16:40,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 511 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:16:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-06 05:16:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2025-02-06 05:16:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 51 states have internal predecessors, (58), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:16:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2025-02-06 05:16:40,609 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 43 [2025-02-06 05:16:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:16:40,610 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2025-02-06 05:16:40,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 37 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 05:16:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2025-02-06 05:16:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-06 05:16:40,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:16:40,615 INFO L218 NwaCegarLoop]: trace histogram [15, 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] [2025-02-06 05:16:40,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 05:16:40,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:40,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:16:40,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:16:40,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1741688207, now seen corresponding path program 5 times [2025-02-06 05:16:40,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:16:40,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612958444] [2025-02-06 05:16:40,817 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 05:16:40,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:16:40,844 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 9 equivalence classes. [2025-02-06 05:16:41,152 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 05:16:41,152 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-06 05:16:41,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:16:44,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612958444] [2025-02-06 05:16:44,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612958444] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:16:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124876686] [2025-02-06 05:16:44,521 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 05:16:44,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:16:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:16:44,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:16:44,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 05:16:44,607 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 9 equivalence classes. [2025-02-06 05:16:47,313 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 05:16:47,313 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-06 05:16:47,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:16:47,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-02-06 05:16:47,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:16:47,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 05:16:47,371 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 0 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 05:16:47,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2025-02-06 05:16:47,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-02-06 05:16:47,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2025-02-06 05:16:47,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2025-02-06 05:16:47,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2025-02-06 05:16:47,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2025-02-06 05:16:47,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2025-02-06 05:16:47,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:47,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2025-02-06 05:16:48,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:48,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2025-02-06 05:16:48,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:48,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2025-02-06 05:16:48,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:48,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2025-02-06 05:16:48,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:48,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2025-02-06 05:16:48,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:16:48,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2025-02-06 05:16:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:16:50,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:17:01,879 WARN L286 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 181 DAG size of output: 177 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2025-02-06 05:17:04,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2025-02-06 05:17:04,259 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 45 treesize of output 41 [2025-02-06 05:17:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:17:04,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124876686] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 05:17:04,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 05:17:04,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 26] total 77 [2025-02-06 05:17:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394060339] [2025-02-06 05:17:04,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 05:17:04,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-02-06 05:17:04,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:17:04,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-02-06 05:17:04,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2025-02-06 05:17:04,394 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 75 states have internal predecessors, (102), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:17:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:17:10,302 INFO L93 Difference]: Finished difference Result 151 states and 188 transitions. [2025-02-06 05:17:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-06 05:17:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 75 states have internal predecessors, (102), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 48 [2025-02-06 05:17:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:17:10,303 INFO L225 Difference]: With dead ends: 151 [2025-02-06 05:17:10,304 INFO L226 Difference]: Without dead ends: 124 [2025-02-06 05:17:10,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2010 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1135, Invalid=11075, Unknown=0, NotChecked=0, Total=12210 [2025-02-06 05:17:10,308 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 81 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 05:17:10,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1446 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 05:17:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-06 05:17:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 67. [2025-02-06 05:17:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.24) internal successors, (62), 53 states have internal predecessors, (62), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-06 05:17:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2025-02-06 05:17:10,329 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 48 [2025-02-06 05:17:10,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:17:10,329 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2025-02-06 05:17:10,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 75 states have internal predecessors, (102), 7 states have call successors, (10), 4 states have call predecessors, (10), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2025-02-06 05:17:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2025-02-06 05:17:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 05:17:10,332 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:17:10,332 INFO L218 NwaCegarLoop]: trace histogram [15, 5, 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] [2025-02-06 05:17:10,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 05:17:10,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-06 05:17:10,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:17:10,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:17:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2018756272, now seen corresponding path program 6 times [2025-02-06 05:17:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:17:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194740526] [2025-02-06 05:17:10,537 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 05:17:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:17:10,561 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 9 equivalence classes. [2025-02-06 05:17:10,677 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 05:17:10,677 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-06 05:17:10,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:17:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:17:12,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:17:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194740526] [2025-02-06 05:17:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194740526] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 05:17:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690700493] [2025-02-06 05:17:12,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 05:17:12,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 05:17:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:17:12,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 05:17:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 05:17:13,043 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 9 equivalence classes. [2025-02-06 05:17:25,741 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 05:17:25,741 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-06 05:17:25,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:17:25,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 116 conjuncts are in the unsatisfiable core [2025-02-06 05:17:25,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 05:17:25,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 05:17:25,799 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 0 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 05:17:25,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:25,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 30 treesize of output 32 [2025-02-06 05:17:25,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:25,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-02-06 05:17:25,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:25,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2025-02-06 05:17:25,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:25,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2025-02-06 05:17:26,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2025-02-06 05:17:26,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2025-02-06 05:17:26,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2025-02-06 05:17:26,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2025-02-06 05:17:26,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 128 [2025-02-06 05:17:26,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 111 treesize of output 140 [2025-02-06 05:17:26,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 152 [2025-02-06 05:17:26,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 129 treesize of output 164 [2025-02-06 05:17:26,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 05:17:26,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 176 [2025-02-06 05:17:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 05:17:29,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 05:17:41,407 WARN L286 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 181 DAG size of output: 177 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)