./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_priority_queue_top_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 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 03:04:24,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 03:04:24,627 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 03:04:24,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 03:04:24,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 03:04:24,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 03:04:24,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 03:04:24,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 03:04:24,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 03:04:24,648 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 03:04:24,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 03:04:24,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 03:04:24,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 03:04:24,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 03:04:24,649 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 03:04:24,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 03:04:24,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 03:04:24,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 03:04:24,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 03:04:24,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:04:24,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 03:04:24,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 03:04:24,651 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 -> 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 [2025-03-04 03:04:24,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 03:04:24,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 03:04:24,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 03:04:24,857 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 03:04:24,857 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 03:04:24,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2025-03-04 03:04:26,013 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5a763c1/5035be1cf6af464e880bede082828edd/FLAGbbd1dbe60 [2025-03-04 03:04:26,378 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 03:04:26,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2025-03-04 03:04:26,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5a763c1/5035be1cf6af464e880bede082828edd/FLAGbbd1dbe60 [2025-03-04 03:04:26,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5a763c1/5035be1cf6af464e880bede082828edd [2025-03-04 03:04:26,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 03:04:26,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 03:04:26,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 03:04:26,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 03:04:26,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 03:04:26,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:04:26" (1/1) ... [2025-03-04 03:04:26,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a278c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:26, skipping insertion in model container [2025-03-04 03:04:26,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:04:26" (1/1) ... [2025-03-04 03:04:26,626 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 03:04:26,812 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_priority_queue_top_harness.i[4496,4509] [2025-03-04 03:04:26,820 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_priority_queue_top_harness.i[4556,4569] [2025-03-04 03:04:27,393 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,394 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,394 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,394 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,395 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,405 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,405 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,406 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,407 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,822 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,823 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:04:27,878 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 03:04:27,887 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_priority_queue_top_harness.i[4496,4509] [2025-03-04 03:04:27,887 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_priority_queue_top_harness.i[4556,4569] [2025-03-04 03:04:27,927 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,928 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,928 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,928 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,928 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,935 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,936 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,937 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,937 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2025-03-04 03:04:28,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:04:28,169 INFO L204 MainTranslator]: Completed translation [2025-03-04 03:04:28,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28 WrapperNode [2025-03-04 03:04:28,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 03:04:28,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 03:04:28,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 03:04:28,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 03:04:28,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,278 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2025-03-04 03:04:28,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 03:04:28,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 03:04:28,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 03:04:28,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 03:04:28,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,371 INFO L175 MemorySlicer]: Split 340 memory accesses to 7 slices as follows [238, 2, 2, 82, 3, 6, 7]. 70 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [6, 2, 1, 10, 1, 0, 5]. The 253 writes are split as follows [232, 0, 1, 17, 1, 2, 0]. [2025-03-04 03:04:28,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 03:04:28,421 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 03:04:28,421 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 03:04:28,421 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 03:04:28,422 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:04:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:28,455 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) [2025-03-04 03:04:28,459 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 [2025-03-04 03:04:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-04 03:04:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-04 03:04:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 03:04:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-04 03:04:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-04 03:04:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-04 03:04:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-04 03:04:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 03:04:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-04 03:04:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 03:04:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 03:04:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 03:04:28,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-04 03:04:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-04 03:04:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 03:04:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-04 03:04:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-04 03:04:28,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 03:04:28,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2025-03-04 03:04:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-04 03:04:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 03:04:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 03:04:28,719 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 03:04:28,721 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 03:04:28,749 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-04 03:04:28,781 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-04 03:04:28,805 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-04 03:04:28,918 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7494: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-04 03:04:28,972 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-04 03:04:28,976 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-04 03:04:34,081 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7530: havoc aws_priority_queue_top_#t~ret694#1; [2025-03-04 03:04:34,082 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3509: havoc aws_array_list_get_at_ptr_#t~ret274#1; [2025-03-04 03:04:34,082 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7529-2: havoc aws_priority_queue_top_#t~ret693#1; [2025-03-04 03:04:34,140 INFO L? ?]: Removed 160 outVars from TransFormulas that were not future-live. [2025-03-04 03:04:34,140 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 03:04:34,153 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 03:04:34,155 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 03:04:34,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:04:34 BoogieIcfgContainer [2025-03-04 03:04:34,156 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 03:04:34,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 03:04:34,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 03:04:34,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 03:04:34,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:04:26" (1/3) ... [2025-03-04 03:04:34,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a550e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:04:34, skipping insertion in model container [2025-03-04 03:04:34,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (2/3) ... [2025-03-04 03:04:34,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8a550e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:04:34, skipping insertion in model container [2025-03-04 03:04:34,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:04:34" (3/3) ... [2025-03-04 03:04:34,165 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2025-03-04 03:04:34,177 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 03:04:34,180 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_top_harness.i that has 19 procedures, 206 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-04 03:04:34,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 03:04:34,242 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;@4e3dd2a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 03:04:34,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 03:04:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-04 03:04:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-04 03:04:34,256 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:34,257 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:34,257 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:34,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1894184768, now seen corresponding path program 1 times [2025-03-04 03:04:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271572100] [2025-03-04 03:04:34,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:38,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:39,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:39,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:39,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-04 03:04:39,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271572100] [2025-03-04 03:04:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271572100] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:04:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735748926] [2025-03-04 03:04:39,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:39,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:04:39,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:39,589 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) [2025-03-04 03:04:39,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 03:04:43,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:44,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:44,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:44,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:44,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 4580 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 03:04:44,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:04:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-04 03:04:44,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:04:44,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735748926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:04:44,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:04:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 03:04:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906558383] [2025-03-04 03:04:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:04:44,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 03:04:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:04:44,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 03:04:44,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 03:04:44,210 INFO L87 Difference]: Start difference. First operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-04 03:04:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:04:44,236 INFO L93 Difference]: Finished difference Result 389 states and 543 transitions. [2025-03-04 03:04:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 03:04:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2025-03-04 03:04:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:04:44,243 INFO L225 Difference]: With dead ends: 389 [2025-03-04 03:04:44,243 INFO L226 Difference]: Without dead ends: 201 [2025-03-04 03:04:44,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 03:04:44,247 INFO L435 NwaCegarLoop]: 268 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, 268 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 [2025-03-04 03:04:44,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 03:04:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-04 03:04:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-04 03:04:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.2) internal successors, (150), 126 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-04 03:04:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2025-03-04 03:04:44,282 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 148 [2025-03-04 03:04:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:04:44,283 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2025-03-04 03:04:44,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-04 03:04:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2025-03-04 03:04:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-04 03:04:44,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:44,287 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:44,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 03:04:44,488 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 [2025-03-04 03:04:44,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:44,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1513890431, now seen corresponding path program 1 times [2025-03-04 03:04:44,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:44,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045714640] [2025-03-04 03:04:44,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:44,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:48,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:48,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:48,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:48,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-04 03:04:49,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045714640] [2025-03-04 03:04:49,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045714640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:04:49,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:04:49,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 03:04:49,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142528967] [2025-03-04 03:04:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:04:49,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 03:04:49,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:04:49,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 03:04:49,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 03:04:49,313 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-04 03:04:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:04:49,894 INFO L93 Difference]: Finished difference Result 353 states and 462 transitions. [2025-03-04 03:04:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 03:04:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2025-03-04 03:04:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:04:49,897 INFO L225 Difference]: With dead ends: 353 [2025-03-04 03:04:49,898 INFO L226 Difference]: Without dead ends: 201 [2025-03-04 03:04:49,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 03:04:49,900 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 19 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:04:49,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 938 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 03:04:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-04 03:04:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-04 03:04:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.192) internal successors, (149), 126 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-04 03:04:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 262 transitions. [2025-03-04 03:04:49,915 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 262 transitions. Word has length 148 [2025-03-04 03:04:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:04:49,916 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 262 transitions. [2025-03-04 03:04:49,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-04 03:04:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 262 transitions. [2025-03-04 03:04:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-04 03:04:49,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:49,918 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:49,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 03:04:49,919 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:49,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1978444475, now seen corresponding path program 1 times [2025-03-04 03:04:49,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:49,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979987990] [2025-03-04 03:04:49,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:49,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:53,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-04 03:04:53,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-04 03:04:53,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:53,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-04 03:04:55,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979987990] [2025-03-04 03:04:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979987990] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:04:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140844332] [2025-03-04 03:04:55,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:04:55,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:55,171 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) [2025-03-04 03:04:55,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 03:04:59,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-04 03:04:59,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-04 03:04:59,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:59,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:59,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 03:04:59,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:05:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-04 03:05:01,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:05:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140844332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:01,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:05:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-04 03:05:01,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54835865] [2025-03-04 03:05:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:01,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 03:05:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:01,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 03:05:01,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-04 03:05:01,225 INFO L87 Difference]: Start difference. First operand 201 states and 262 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-04 03:05:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:05,603 INFO L93 Difference]: Finished difference Result 372 states and 494 transitions. [2025-03-04 03:05:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 03:05:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 156 [2025-03-04 03:05:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:05,610 INFO L225 Difference]: With dead ends: 372 [2025-03-04 03:05:05,610 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:05,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-03-04 03:05:05,611 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 297 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:05,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1189 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 03:05:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 128 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-04 03:05:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2025-03-04 03:05:05,626 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 156 [2025-03-04 03:05:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:05,627 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2025-03-04 03:05:05,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-04 03:05:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2025-03-04 03:05:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-04 03:05:05,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:05,629 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:05,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 03:05:05,830 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,SelfDestructingSolverStorable2 [2025-03-04 03:05:05,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:05,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1369422142, now seen corresponding path program 1 times [2025-03-04 03:05:05,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:05,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517352559] [2025-03-04 03:05:05,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:05,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:09,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-04 03:05:09,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-04 03:05:09,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:09,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-04 03:05:11,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517352559] [2025-03-04 03:05:11,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517352559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:11,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:05:11,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 03:05:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687031505] [2025-03-04 03:05:11,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:11,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 03:05:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:11,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 03:05:11,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 03:05:11,041 INFO L87 Difference]: Start difference. First operand 203 states and 269 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-04 03:05:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:12,085 INFO L93 Difference]: Finished difference Result 358 states and 475 transitions. [2025-03-04 03:05:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 03:05:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 171 [2025-03-04 03:05:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:12,091 INFO L225 Difference]: With dead ends: 358 [2025-03-04 03:05:12,091 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:12,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 03:05:12,092 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:12,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1132 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 03:05:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-04 03:05:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2025-03-04 03:05:12,106 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 171 [2025-03-04 03:05:12,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:12,106 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2025-03-04 03:05:12,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-04 03:05:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2025-03-04 03:05:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-04 03:05:12,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:12,108 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:12,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 03:05:12,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:12,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1853508391, now seen corresponding path program 1 times [2025-03-04 03:05:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50974015] [2025-03-04 03:05:12,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:15,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-04 03:05:15,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-04 03:05:15,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:15,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-04 03:05:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50974015] [2025-03-04 03:05:17,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50974015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:05:17,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300063371] [2025-03-04 03:05:17,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:17,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:05:17,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:05:17,324 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) [2025-03-04 03:05:17,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 03:05:21,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-04 03:05:21,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-04 03:05:21,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:21,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:21,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 4824 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 03:05:21,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:05:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-04 03:05:24,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:05:24,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300063371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:24,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:05:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2025-03-04 03:05:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994325258] [2025-03-04 03:05:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:24,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 03:05:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:24,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 03:05:24,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-04 03:05:24,202 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-04 03:05:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:29,806 INFO L93 Difference]: Finished difference Result 371 states and 492 transitions. [2025-03-04 03:05:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 03:05:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 187 [2025-03-04 03:05:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:29,809 INFO L225 Difference]: With dead ends: 371 [2025-03-04 03:05:29,809 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:29,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-03-04 03:05:29,810 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 314 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:29,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1317 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-04 03:05:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (61), 56 states have call predecessors, (61), 56 states have call successors, (61) [2025-03-04 03:05:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 267 transitions. [2025-03-04 03:05:29,821 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 267 transitions. Word has length 187 [2025-03-04 03:05:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:29,822 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 267 transitions. [2025-03-04 03:05:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-04 03:05:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 267 transitions. [2025-03-04 03:05:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-03-04 03:05:29,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:29,824 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:29,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 03:05:30,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:05:30,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:30,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1286987474, now seen corresponding path program 2 times [2025-03-04 03:05:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777477861] [2025-03-04 03:05:30,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 03:05:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:33,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 202 statements into 2 equivalence classes. [2025-03-04 03:05:34,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 202 of 202 statements. [2025-03-04 03:05:34,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 03:05:34,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-03-04 03:05:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777477861] [2025-03-04 03:05:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777477861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:35,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:05:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 03:05:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688043053] [2025-03-04 03:05:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:35,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 03:05:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:35,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 03:05:35,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 03:05:35,370 INFO L87 Difference]: Start difference. First operand 203 states and 267 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2025-03-04 03:05:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:37,299 INFO L93 Difference]: Finished difference Result 343 states and 457 transitions. [2025-03-04 03:05:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 03:05:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 202 [2025-03-04 03:05:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:37,301 INFO L225 Difference]: With dead ends: 343 [2025-03-04 03:05:37,301 INFO L226 Difference]: Without dead ends: 216 [2025-03-04 03:05:37,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-04 03:05:37,302 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 40 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:37,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1567 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 03:05:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-03-04 03:05:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2025-03-04 03:05:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 134 states have internal predecessors, (156), 62 states have call successors, (62), 19 states have call predecessors, (62), 20 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2025-03-04 03:05:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 284 transitions. [2025-03-04 03:05:37,317 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 284 transitions. Word has length 202 [2025-03-04 03:05:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:37,318 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 284 transitions. [2025-03-04 03:05:37,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2025-03-04 03:05:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 284 transitions. [2025-03-04 03:05:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2025-03-04 03:05:37,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:37,321 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:37,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 03:05:37,322 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:37,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash -784836716, now seen corresponding path program 1 times [2025-03-04 03:05:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:37,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972871228] [2025-03-04 03:05:37,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:40,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-03-04 03:05:43,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-03-04 03:05:43,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:43,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat