./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness_negated.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_array_list_clear_harness_negated.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 9e160fe5ab2582a9d6f5a0de6f18c7ad864793aa408f2050ff0148a78c40a3b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:32:54,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:32:54,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 02:32:54,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:32:54,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:32:54,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:32:54,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:32:54,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:32:54,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:32:54,495 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:32:54,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:32:54,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:32:54,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:32:54,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:32:54,496 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:32:54,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:32:54,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:32:54,497 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:32:54,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:32:54,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:32:54,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:32:54,498 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:32:54,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:32:54,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:32:54,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:32:54,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:32:54,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:32:54,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:32:54,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:32:54,499 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 -> 9e160fe5ab2582a9d6f5a0de6f18c7ad864793aa408f2050ff0148a78c40a3b1 [2025-03-04 02:32:54,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:32:54,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:32:54,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:32:54,734 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:32:54,734 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:32:54,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness_negated.i [2025-03-04 02:32:55,856 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532ad82fb/23a35383a15a446492dab8a09233c591/FLAG817672dba [2025-03-04 02:32:56,316 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:32:56,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness_negated.i [2025-03-04 02:32:56,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532ad82fb/23a35383a15a446492dab8a09233c591/FLAG817672dba [2025-03-04 02:32:56,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532ad82fb/23a35383a15a446492dab8a09233c591 [2025-03-04 02:32:56,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:32:56,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:32:56,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:32:56,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:32:56,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:32:56,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:32:56" (1/1) ... [2025-03-04 02:32:56,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6755a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:56, skipping insertion in model container [2025-03-04 02:32:56,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:32:56" (1/1) ... [2025-03-04 02:32:56,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:32:56,711 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_array_list_clear_harness_negated.i[4494,4507] [2025-03-04 02:32:56,717 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_array_list_clear_harness_negated.i[4554,4567] [2025-03-04 02:32:57,209 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,211 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,212 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,212 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,213 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,223 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,224 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,225 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,225 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,227 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,228 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,229 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,229 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,509 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,517 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:32:57,626 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:32:57,636 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_array_list_clear_harness_negated.i[4494,4507] [2025-03-04 02:32:57,639 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_array_list_clear_harness_negated.i[4554,4567] [2025-03-04 02:32:57,703 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,704 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,704 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,704 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,705 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,710 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,713 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,714 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,714 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,715 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,715 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,715 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,715 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,780 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 02:32:57,788 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7517-7528] [2025-03-04 02:32:57,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:32:57,969 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:32:57,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57 WrapperNode [2025-03-04 02:32:57,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:32:57,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:32:57,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:32:57,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:32:57,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,058 INFO L138 Inliner]: procedures = 679, calls = 1574, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 584 [2025-03-04 02:32:58,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:32:58,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:32:58,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:32:58,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:32:58,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,145 INFO L175 MemorySlicer]: Split 291 memory accesses to 6 slices as follows [2, 238, 34, 9, 5, 3]. 82 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [2, 6, 5, 5, 5, 1]. The 237 writes are split as follows [0, 232, 4, 0, 0, 1]. [2025-03-04 02:32:58,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:32:58,189 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:32:58,190 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:32:58,190 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:32:58,190 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (1/1) ... [2025-03-04 02:32:58,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:32:58,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:32:58,223 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 02:32:58,229 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 02:32:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 02:32:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-04 02:32:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-04 02:32:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-04 02:32:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-04 02:32:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-04 02:32:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-04 02:32:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:32:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:32:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 02:32:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 02:32:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 02:32:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 02:32:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2025-03-04 02:32:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-04 02:32:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-04 02:32:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 02:32:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 02:32:58,455 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:32:58,456 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:32:58,491 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-04 02:32:58,546 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-04 02:32:58,607 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 02:32:58,612 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-04 02:33:03,727 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2025-03-04 02:33:03,728 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:33:03,736 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:33:03,738 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:33:03,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:33:03 BoogieIcfgContainer [2025-03-04 02:33:03,740 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:33:03,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:33:03,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:33:03,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:33:03,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:32:56" (1/3) ... [2025-03-04 02:33:03,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6b895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:33:03, skipping insertion in model container [2025-03-04 02:33:03,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:32:57" (2/3) ... [2025-03-04 02:33:03,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f6b895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:33:03, skipping insertion in model container [2025-03-04 02:33:03,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:33:03" (3/3) ... [2025-03-04 02:33:03,748 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness_negated.i [2025-03-04 02:33:03,759 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:33:03,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_clear_harness_negated.i that has 12 procedures, 101 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 02:33:03,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:33:03,825 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;@a57bbc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:33:03,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 02:33:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 02:33:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-04 02:33:03,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 02:33:03,835 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:33:03,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:33:03,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:33:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -976968705, now seen corresponding path program 1 times [2025-03-04 02:33:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:33:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080332234] [2025-03-04 02:33:03,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:33:08,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 02:33:08,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 02:33:08,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:08,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-04 02:33:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:33:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080332234] [2025-03-04 02:33:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080332234] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:33:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530653386] [2025-03-04 02:33:09,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:09,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:33:09,091 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 02:33:09,093 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 02:33:13,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 02:33:13,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 02:33:13,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:13,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:13,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 02:33:13,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:33:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-04 02:33:13,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 02:33:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530653386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:33:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 02:33:13,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 02:33:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899287056] [2025-03-04 02:33:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:33:13,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 02:33:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:33:13,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 02:33:13,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 02:33:13,784 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-04 02:33:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 02:33:13,811 INFO L93 Difference]: Finished difference Result 195 states and 256 transitions. [2025-03-04 02:33:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 02:33:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2025-03-04 02:33:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 02:33:13,820 INFO L225 Difference]: With dead ends: 195 [2025-03-04 02:33:13,820 INFO L226 Difference]: Without dead ends: 96 [2025-03-04 02:33:13,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 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 02:33:13,826 INFO L435 NwaCegarLoop]: 123 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, 123 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 02:33:13,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 02:33:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-04 02:33:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-04 02:33:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-04 02:33:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2025-03-04 02:33:13,857 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 60 [2025-03-04 02:33:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 02:33:13,857 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2025-03-04 02:33:13,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-04 02:33:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2025-03-04 02:33:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-04 02:33:13,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 02:33:13,861 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:33:13,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 02:33:14,065 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 02:33:14,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:33:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:33:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -776437219, now seen corresponding path program 1 times [2025-03-04 02:33:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:33:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177172450] [2025-03-04 02:33:14,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:33:17,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 02:33:18,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 02:33:18,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:18,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-04 02:33:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:33:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177172450] [2025-03-04 02:33:19,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177172450] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:33:19,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288060252] [2025-03-04 02:33:19,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:19,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:33:19,056 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 02:33:19,058 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 02:33:23,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 02:33:23,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 02:33:23,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:23,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:23,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 02:33:23,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:33:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 02:33:24,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 02:33:24,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288060252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:33:24,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 02:33:24,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-03-04 02:33:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616854476] [2025-03-04 02:33:24,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:33:24,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:33:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:33:24,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:33:24,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-04 02:33:24,424 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-04 02:33:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 02:33:26,066 INFO L93 Difference]: Finished difference Result 160 states and 199 transitions. [2025-03-04 02:33:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 02:33:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2025-03-04 02:33:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 02:33:26,069 INFO L225 Difference]: With dead ends: 160 [2025-03-04 02:33:26,069 INFO L226 Difference]: Without dead ends: 98 [2025-03-04 02:33:26,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-04 02:33:26,070 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 123 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 02:33:26,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 305 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 02:33:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-04 02:33:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-03-04 02:33:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-03-04 02:33:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2025-03-04 02:33:26,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 60 [2025-03-04 02:33:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 02:33:26,079 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2025-03-04 02:33:26,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-04 02:33:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2025-03-04 02:33:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 02:33:26,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 02:33:26,081 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:26,095 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 02:33:26,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-04 02:33:26,284 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:33:26,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:33:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -457428701, now seen corresponding path program 1 times [2025-03-04 02:33:26,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:33:26,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291536056] [2025-03-04 02:33:26,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:33:30,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 02:33:30,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 02:33:30,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:30,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-04 02:33:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:33:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291536056] [2025-03-04 02:33:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291536056] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:33:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649850362] [2025-03-04 02:33:31,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:31,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:31,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:33:31,117 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 02:33:31,119 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 02:33:35,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 02:33:35,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 02:33:35,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:35,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:35,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 4151 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 02:33:35,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:33:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 02:33:35,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 02:33:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649850362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:33:35,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 02:33:35,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-04 02:33:35,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091149155] [2025-03-04 02:33:35,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:33:35,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:33:35,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:33:35,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:33:35,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:33:35,612 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-04 02:33:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 02:33:35,802 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2025-03-04 02:33:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 02:33:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2025-03-04 02:33:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 02:33:35,804 INFO L225 Difference]: With dead ends: 164 [2025-03-04 02:33:35,804 INFO L226 Difference]: Without dead ends: 100 [2025-03-04 02:33:35,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:33:35,805 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 02:33:35,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 02:33:35,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-04 02:33:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-03-04 02:33:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2025-03-04 02:33:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2025-03-04 02:33:35,812 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 75 [2025-03-04 02:33:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 02:33:35,813 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2025-03-04 02:33:35,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-04 02:33:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2025-03-04 02:33:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 02:33:35,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 02:33:35,814 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:35,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 02:33:36,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:36,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:33:36,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:33:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2112057698, now seen corresponding path program 1 times [2025-03-04 02:33:36,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:33:36,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216848707] [2025-03-04 02:33:36,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:36,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:33:39,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 02:33:39,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 02:33:39,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:39,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-04 02:33:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:33:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216848707] [2025-03-04 02:33:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216848707] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:33:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213423536] [2025-03-04 02:33:41,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:41,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:41,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:33:41,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:33:41,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 02:33:45,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 02:33:45,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 02:33:45,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:45,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:33:45,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 4156 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 02:33:45,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:33:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-04 02:33:46,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 02:33:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213423536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:33:46,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 02:33:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-04 02:33:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454264218] [2025-03-04 02:33:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:33:46,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 02:33:46,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:33:46,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 02:33:46,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-04 02:33:46,975 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-04 02:33:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 02:33:50,083 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2025-03-04 02:33:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 02:33:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2025-03-04 02:33:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 02:33:50,085 INFO L225 Difference]: With dead ends: 161 [2025-03-04 02:33:50,085 INFO L226 Difference]: Without dead ends: 98 [2025-03-04 02:33:50,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-03-04 02:33:50,086 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 128 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-04 02:33:50,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 434 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-04 02:33:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-04 02:33:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-03-04 02:33:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-04 02:33:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2025-03-04 02:33:50,094 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 75 [2025-03-04 02:33:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 02:33:50,094 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2025-03-04 02:33:50,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-04 02:33:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2025-03-04 02:33:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-04 02:33:50,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 02:33:50,095 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:33:50,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 02:33:50,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:33:50,296 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:33:50,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:33:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash -491737964, now seen corresponding path program 1 times [2025-03-04 02:33:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:33:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796402656] [2025-03-04 02:33:50,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:33:50,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:33:53,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-04 02:33:55,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-04 02:33:55,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:33:55,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:34:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-04 02:34:03,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:34:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796402656] [2025-03-04 02:34:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796402656] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:34:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989359472] [2025-03-04 02:34:03,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:34:03,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:34:03,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:34:04,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:34:04,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 02:34:08,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes.