./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 021ac35396c67703f42c73aa20a3d08d3b8ea81bc00c2712290e90099f1c0b85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:18:29,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:18:29,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:18:29,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:18:29,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:18:29,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:18:29,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:18:29,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:18:29,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:18:29,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:18:29,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:18:29,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:18:29,135 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:18:29,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:18:29,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:18:29,136 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 021ac35396c67703f42c73aa20a3d08d3b8ea81bc00c2712290e90099f1c0b85 [2025-03-17 07:18:29,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:18:29,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:18:29,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:18:29,363 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:18:29,363 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:18:29,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2025-03-17 07:18:30,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202d26c73/7ae2e7ca63eb4536aba6c6c746c6ec26/FLAGf9477470c [2025-03-17 07:18:30,895 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:18:30,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2025-03-17 07:18:30,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202d26c73/7ae2e7ca63eb4536aba6c6c746c6ec26/FLAGf9477470c [2025-03-17 07:18:31,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202d26c73/7ae2e7ca63eb4536aba6c6c746c6ec26 [2025-03-17 07:18:31,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:18:31,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:18:31,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:18:31,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:18:31,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:18:31,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:18:31" (1/1) ... [2025-03-17 07:18:31,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dac3c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:31, skipping insertion in model container [2025-03-17 07:18:31,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:18:31" (1/1) ... [2025-03-17 07:18:31,122 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:18:31,308 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2025-03-17 07:18:31,315 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2025-03-17 07:18:31,729 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,730 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,730 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,730 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,731 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,741 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,744 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,745 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,746 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,747 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,748 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,748 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:31,748 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,038 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[151109,151122] [2025-03-17 07:18:32,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:18:32,053 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:18:32,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4503,4516] [2025-03-17 07:18:32,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[4563,4576] [2025-03-17 07:18:32,109 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,109 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,109 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,110 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,110 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,115 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,115 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,116 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,116 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,116 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,117 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,117 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,117 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:18:32,183 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i[151109,151122] [2025-03-17 07:18:32,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:18:32,313 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:18:32,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32 WrapperNode [2025-03-17 07:18:32,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:18:32,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:18:32,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:18:32,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:18:32,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,395 INFO L138 Inliner]: procedures = 668, calls = 1078, calls flagged for inlining = 52, calls inlined = 5, statements flattened = 210 [2025-03-17 07:18:32,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:18:32,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:18:32,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:18:32,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:18:32,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,428 INFO L175 MemorySlicer]: Split 68 memory accesses to 5 slices as follows [2, 7, 7, 5, 47]. 69 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 4, 4, 5, 0]. The 18 writes are split as follows [0, 0, 0, 0, 18]. [2025-03-17 07:18:32,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:18:32,462 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:18:32,462 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:18:32,462 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:18:32,463 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (1/1) ... [2025-03-17 07:18:32,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:18:32,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:32,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 07:18:32,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 07:18:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2025-03-17 07:18:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2025-03-17 07:18:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:18:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:18:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:18:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:18:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2025-03-17 07:18:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-03-17 07:18:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:18:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:18:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2025-03-17 07:18:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:18:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 07:18:32,513 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-17 07:18:32,514 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-17 07:18:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:18:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:18:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:18:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 07:18:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 07:18:32,720 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:18:32,721 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:18:32,770 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-17 07:18:32,787 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4718: havoc #t~mem312.base, #t~mem312.offset;havoc #t~short313;havoc #t~mem314.base, #t~mem314.offset;havoc #t~mem315.base, #t~mem315.offset;havoc #t~short316; [2025-03-17 07:18:32,981 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-03-17 07:18:32,986 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4685: havoc #t~mem302.base, #t~mem302.offset; [2025-03-17 07:18:33,010 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2025-03-17 07:18:33,010 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:18:33,020 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:18:33,020 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:18:33,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:18:33 BoogieIcfgContainer [2025-03-17 07:18:33,021 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:18:33,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:18:33,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:18:33,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:18:33,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:18:31" (1/3) ... [2025-03-17 07:18:33,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810f786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:18:33, skipping insertion in model container [2025-03-17 07:18:33,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:18:32" (2/3) ... [2025-03-17 07:18:33,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7810f786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:18:33, skipping insertion in model container [2025-03-17 07:18:33,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:18:33" (3/3) ... [2025-03-17 07:18:33,029 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2025-03-17 07:18:33,041 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:18:33,042 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_swap_contents_harness.i that has 9 procedures, 109 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-17 07:18:33,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:18:33,086 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;@2491bd2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:18:33,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:18:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 68 states have internal predecessors, (84), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-17 07:18:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-17 07:18:33,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:33,097 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:33,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:33,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1572108049, now seen corresponding path program 1 times [2025-03-17 07:18:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:33,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827423095] [2025-03-17 07:18:33,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:33,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-17 07:18:33,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-17 07:18:33,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:33,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 07:18:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827423095] [2025-03-17 07:18:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827423095] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648174320] [2025-03-17 07:18:33,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:33,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:33,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:18:33,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 07:18:33,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-17 07:18:33,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-17 07:18:33,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:33,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:33,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:18:33,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-17 07:18:33,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:18:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648174320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:18:33,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:18:33,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:18:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413653972] [2025-03-17 07:18:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:18:33,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:18:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:33,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:18:33,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:18:33,741 INFO L87 Difference]: Start difference. First operand has 109 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 68 states have internal predecessors, (84), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-17 07:18:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:18:33,769 INFO L93 Difference]: Finished difference Result 216 states and 326 transitions. [2025-03-17 07:18:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:18:33,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2025-03-17 07:18:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:18:33,776 INFO L225 Difference]: With dead ends: 216 [2025-03-17 07:18:33,778 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 07:18:33,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:18:33,783 INFO L435 NwaCegarLoop]: 150 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, 150 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:18:33,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:18:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 07:18:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-17 07:18:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 61 states have (on average 1.278688524590164) internal successors, (78), 65 states have internal predecessors, (78), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-17 07:18:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2025-03-17 07:18:33,817 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 101 [2025-03-17 07:18:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:18:33,818 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2025-03-17 07:18:33,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-17 07:18:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2025-03-17 07:18:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-17 07:18:33,820 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:18:33,820 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:18:33,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 07:18:34,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 07:18:34,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:18:34,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:18:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -872095790, now seen corresponding path program 1 times [2025-03-17 07:18:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:18:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965556051] [2025-03-17 07:18:34,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:18:34,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-17 07:18:34,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-17 07:18:34,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:34,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-17 07:18:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:18:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965556051] [2025-03-17 07:18:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965556051] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043699917] [2025-03-17 07:18:34,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:18:34,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:18:34,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:18:34,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:18:34,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 07:18:34,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-17 07:18:35,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-17 07:18:35,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:18:35,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:18:35,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-17 07:18:35,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:18:35,064 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 10 treesize of output 8 [2025-03-17 07:18:35,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2025-03-17 07:18:35,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2025-03-17 07:18:35,165 WARN L214 Elim1Store]: Array PQE input equivalent to false [2025-03-17 07:18:35,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-17 07:18:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-17 07:18:39,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 07:18:43,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043699917] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:18:43,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 07:18:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18] total 22 [2025-03-17 07:18:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493088648] [2025-03-17 07:18:43,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 07:18:43,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 07:18:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:18:43,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 07:18:43,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=712, Unknown=15, NotChecked=0, Total=812 [2025-03-17 07:18:43,999 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand has 22 states, 18 states have (on average 4.388888888888889) internal successors, (79), 17 states have internal predecessors, (79), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2025-03-17 07:18:48,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:18:56,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:04,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:08,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:12,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:16,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:20,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:25,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:29,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:33,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:38,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:42,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:44,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:48,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:52,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:19:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:53,353 INFO L93 Difference]: Finished difference Result 315 states and 466 transitions. [2025-03-17 07:19:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 07:19:53,353 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.388888888888889) internal successors, (79), 17 states have internal predecessors, (79), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) Word has length 101 [2025-03-17 07:19:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:53,358 INFO L225 Difference]: With dead ends: 315 [2025-03-17 07:19:53,359 INFO L226 Difference]: Without dead ends: 225 [2025-03-17 07:19:53,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=274, Invalid=2158, Unknown=18, NotChecked=0, Total=2450 [2025-03-17 07:19:53,363 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 240 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 155 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.7s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:53,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1047 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2429 Invalid, 22 Unknown, 0 Unchecked, 60.7s Time] [2025-03-17 07:19:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-17 07:19:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2025-03-17 07:19:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 133 states have (on average 1.300751879699248) internal successors, (173), 143 states have internal predecessors, (173), 68 states have call successors, (68), 16 states have call predecessors, (68), 20 states have return successors, (90), 64 states have call predecessors, (90), 64 states have call successors, (90) [2025-03-17 07:19:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 331 transitions. [2025-03-17 07:19:53,410 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 331 transitions. Word has length 101 [2025-03-17 07:19:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:53,411 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 331 transitions. [2025-03-17 07:19:53,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.388888888888889) internal successors, (79), 17 states have internal predecessors, (79), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (24), 7 states have call predecessors, (24), 8 states have call successors, (24) [2025-03-17 07:19:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 331 transitions. [2025-03-17 07:19:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-17 07:19:53,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:53,415 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:53,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 07:19:53,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 07:19:53,619 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:53,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1718057338, now seen corresponding path program 1 times [2025-03-17 07:19:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771415208] [2025-03-17 07:19:53,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:53,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-17 07:19:53,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 07:19:53,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:53,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-03-17 07:19:53,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771415208] [2025-03-17 07:19:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771415208] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:53,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465295949] [2025-03-17 07:19:53,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:53,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:53,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:53,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 07:19:53,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-17 07:19:53,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 07:19:53,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:53,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:53,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 07:19:53,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-17 07:19:53,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:53,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465295949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:53,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:53,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-03-17 07:19:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564712199] [2025-03-17 07:19:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:53,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 07:19:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:54,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 07:19:54,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 07:19:54,000 INFO L87 Difference]: Start difference. First operand 222 states and 331 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 07:19:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:54,026 INFO L93 Difference]: Finished difference Result 408 states and 630 transitions. [2025-03-17 07:19:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 07:19:54,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2025-03-17 07:19:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:54,030 INFO L225 Difference]: With dead ends: 408 [2025-03-17 07:19:54,031 INFO L226 Difference]: Without dead ends: 215 [2025-03-17 07:19:54,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 07:19:54,033 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:54,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:19:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-03-17 07:19:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2025-03-17 07:19:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 128 states have (on average 1.2734375) internal successors, (163), 137 states have internal predecessors, (163), 67 states have call successors, (67), 16 states have call predecessors, (67), 19 states have return successors, (83), 63 states have call predecessors, (83), 63 states have call successors, (83) [2025-03-17 07:19:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 313 transitions. [2025-03-17 07:19:54,065 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 313 transitions. Word has length 103 [2025-03-17 07:19:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:54,065 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 313 transitions. [2025-03-17 07:19:54,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 07:19:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 313 transitions. [2025-03-17 07:19:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-17 07:19:54,066 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:54,067 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:54,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 07:19:54,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:54,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:54,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -641249671, now seen corresponding path program 1 times [2025-03-17 07:19:54,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:54,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42215267] [2025-03-17 07:19:54,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:54,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:54,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-17 07:19:54,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 07:19:54,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:54,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 07:19:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42215267] [2025-03-17 07:19:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42215267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524427193] [2025-03-17 07:19:54,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:54,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:54,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:54,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:54,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 07:19:54,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-17 07:19:54,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 07:19:54,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:54,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:54,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:19:54,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 07:19:54,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524427193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:54,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:54,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 07:19:54,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675611740] [2025-03-17 07:19:54,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:54,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:19:54,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:54,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:19:54,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 07:19:54,837 INFO L87 Difference]: Start difference. First operand 215 states and 313 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 07:19:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:55,044 INFO L93 Difference]: Finished difference Result 405 states and 597 transitions. [2025-03-17 07:19:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 07:19:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 103 [2025-03-17 07:19:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:55,047 INFO L225 Difference]: With dead ends: 405 [2025-03-17 07:19:55,047 INFO L226 Difference]: Without dead ends: 225 [2025-03-17 07:19:55,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:19:55,048 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 39 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:55,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 664 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 07:19:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-17 07:19:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2025-03-17 07:19:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 143 states have internal predecessors, (167), 67 states have call successors, (67), 16 states have call predecessors, (67), 21 states have return successors, (91), 63 states have call predecessors, (91), 63 states have call successors, (91) [2025-03-17 07:19:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2025-03-17 07:19:55,082 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 103 [2025-03-17 07:19:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:55,082 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2025-03-17 07:19:55,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 07:19:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2025-03-17 07:19:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-17 07:19:55,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:55,084 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:55,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 07:19:55,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:55,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:55,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1869256593, now seen corresponding path program 1 times [2025-03-17 07:19:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845246575] [2025-03-17 07:19:55,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:55,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 07:19:55,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 07:19:55,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:55,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 07:19:55,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845246575] [2025-03-17 07:19:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845246575] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169975024] [2025-03-17 07:19:55,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:55,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:55,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:55,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:55,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 07:19:55,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-17 07:19:55,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-17 07:19:55,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:55,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:55,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 07:19:55,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 07:19:55,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169975024] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-17 07:19:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828696490] [2025-03-17 07:19:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:55,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:19:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:55,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:19:55,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-17 07:19:55,948 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 07:19:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:56,176 INFO L93 Difference]: Finished difference Result 429 states and 639 transitions. [2025-03-17 07:19:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:19:56,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2025-03-17 07:19:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:56,183 INFO L225 Difference]: With dead ends: 429 [2025-03-17 07:19:56,183 INFO L226 Difference]: Without dead ends: 243 [2025-03-17 07:19:56,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2025-03-17 07:19:56,184 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 48 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:56,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 768 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 07:19:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-03-17 07:19:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 225. [2025-03-17 07:19:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 147 states have internal predecessors, (173), 67 states have call successors, (67), 16 states have call predecessors, (67), 21 states have return successors, (91), 63 states have call predecessors, (91), 63 states have call successors, (91) [2025-03-17 07:19:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 331 transitions. [2025-03-17 07:19:56,209 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 331 transitions. Word has length 105 [2025-03-17 07:19:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:56,210 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 331 transitions. [2025-03-17 07:19:56,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-17 07:19:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 331 transitions. [2025-03-17 07:19:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-17 07:19:56,211 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:56,211 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:56,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 07:19:56,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:56,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:56,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2100126863, now seen corresponding path program 1 times [2025-03-17 07:19:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191477158] [2025-03-17 07:19:56,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:56,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 07:19:56,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 07:19:56,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:56,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 07:19:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191477158] [2025-03-17 07:19:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191477158] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625517459] [2025-03-17 07:19:56,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:56,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:56,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:56,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:56,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 07:19:56,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-17 07:19:56,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-17 07:19:56,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:56,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:56,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 07:19:56,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-17 07:19:57,009 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625517459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2025-03-17 07:19:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650912728] [2025-03-17 07:19:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:57,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 07:19:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:57,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 07:19:57,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:19:57,010 INFO L87 Difference]: Start difference. First operand 225 states and 331 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 07:19:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:19:57,037 INFO L93 Difference]: Finished difference Result 429 states and 651 transitions. [2025-03-17 07:19:57,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 07:19:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2025-03-17 07:19:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:19:57,039 INFO L225 Difference]: With dead ends: 429 [2025-03-17 07:19:57,039 INFO L226 Difference]: Without dead ends: 233 [2025-03-17 07:19:57,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 07:19:57,041 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 2 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 07:19:57,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 276 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:19:57,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-03-17 07:19:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2025-03-17 07:19:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 138 states have (on average 1.2681159420289856) internal successors, (175), 149 states have internal predecessors, (175), 67 states have call successors, (67), 16 states have call predecessors, (67), 21 states have return successors, (91), 63 states have call predecessors, (91), 63 states have call successors, (91) [2025-03-17 07:19:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 333 transitions. [2025-03-17 07:19:57,078 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 333 transitions. Word has length 106 [2025-03-17 07:19:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:19:57,078 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 333 transitions. [2025-03-17 07:19:57,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 07:19:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 333 transitions. [2025-03-17 07:19:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-17 07:19:57,079 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:19:57,080 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:19:57,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 07:19:57,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:57,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:19:57,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:19:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash -421770893, now seen corresponding path program 1 times [2025-03-17 07:19:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:19:57,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225113234] [2025-03-17 07:19:57,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:19:57,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 07:19:57,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 07:19:57,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:57,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-17 07:19:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:19:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225113234] [2025-03-17 07:19:57,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225113234] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:19:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301291142] [2025-03-17 07:19:57,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:19:57,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:19:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:19:57,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:19:57,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 07:19:58,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-17 07:19:58,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-17 07:19:58,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:19:58,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:19:58,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-17 07:19:58,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:19:58,346 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 22 treesize of output 7 [2025-03-17 07:19:58,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2025-03-17 07:19:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-17 07:19:59,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:19:59,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301291142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:19:59,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:19:59,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2025-03-17 07:19:59,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582264486] [2025-03-17 07:19:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:19:59,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 07:19:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:19:59,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 07:19:59,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2025-03-17 07:19:59,783 INFO L87 Difference]: Start difference. First operand 227 states and 333 transitions. Second operand has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2025-03-17 07:20:03,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:20:07,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 07:20:11,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]