./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_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 f13d223fa70379f8cd684d69e06e46c80e83d85aad0c82c0b48e3125c1bca56a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:55:45,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:55:45,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:55:45,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:55:45,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:55:45,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:55:45,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:55:45,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:55:45,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:55:45,546 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:55:45,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:55:45,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:55:45,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:55:45,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:55:45,548 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:55:45,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:55:45,549 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:55:45,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:55:45,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:55:45,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:55:45,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:55:45,551 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 -> f13d223fa70379f8cd684d69e06e46c80e83d85aad0c82c0b48e3125c1bca56a [2025-03-17 06:55:45,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:55:45,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:55:45,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:55:45,818 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:55:45,818 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:55:45,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.i [2025-03-17 06:55:47,107 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91bf38a3/38e036cf73b64f3783143c2e04888f93/FLAGe4d5a62f0 [2025-03-17 06:55:47,503 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:55:47,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness_negated.i [2025-03-17 06:55:47,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91bf38a3/38e036cf73b64f3783143c2e04888f93/FLAGe4d5a62f0 [2025-03-17 06:55:47,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91bf38a3/38e036cf73b64f3783143c2e04888f93 [2025-03-17 06:55:47,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:55:47,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:55:47,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:55:47,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:55:47,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:55:47,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:55:47" (1/1) ... [2025-03-17 06:55:47,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:47, skipping insertion in model container [2025-03-17 06:55:47,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:55:47" (1/1) ... [2025-03-17 06:55:47,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:55:47,862 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_swap_harness_negated.i[4493,4506] [2025-03-17 06:55:47,870 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_swap_harness_negated.i[4553,4566] [2025-03-17 06:55:48,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,553 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,553 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,556 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,570 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,572 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,574 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,574 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,576 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,941 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,942 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,952 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:48,957 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:55:49,047 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:55:49,057 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_swap_harness_negated.i[4493,4506] [2025-03-17 06:55:49,058 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_swap_harness_negated.i[4553,4566] [2025-03-17 06:55:49,098 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,099 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,099 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,100 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,100 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,108 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,109 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,110 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,110 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,111 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,112 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,112 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,200 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,203 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:49,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7743-7754] [2025-03-17 06:55:49,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:55:49,424 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:55:49,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49 WrapperNode [2025-03-17 06:55:49,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:55:49,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:55:49,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:55:49,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:55:49,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,553 INFO L138 Inliner]: procedures = 680, calls = 1677, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 651 [2025-03-17 06:55:49,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:55:49,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:55:49,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:55:49,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:55:49,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,642 INFO L175 MemorySlicer]: Split 302 memory accesses to 7 slices as follows [238, 2, 6, 5, 39, 3, 9]. 79 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [6, 2, 5, 2, 5, 1, 5]. The 238 writes are split as follows [232, 0, 1, 1, 3, 1, 0]. [2025-03-17 06:55:49,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,674 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:55:49,696 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:55:49,696 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:55:49,696 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:55:49,697 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (1/1) ... [2025-03-17 06:55:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:55:49,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:49,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:55:49,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:55:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:55:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:55:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:55:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:55:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:55:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 06:55:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:55:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-17 06:55:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2025-03-17 06:55:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2025-03-17 06:55:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:55:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:55:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:55:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:55:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 06:55:50,009 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:55:50,012 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:55:50,061 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:55:50,089 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:55:50,111 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L267: havoc nondet_uint8_t_#t~nondet10#1; [2025-03-17 06:55:50,233 INFO L1322 $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; [2025-03-17 06:55:50,239 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:55:50,280 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3527: havoc #t~ret286; [2025-03-17 06:55:50,294 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7364: havoc #t~ret682.base, #t~ret682.offset; [2025-03-17 06:55:55,863 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2025-03-17 06:55:55,863 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:55:55,879 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:55:55,879 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:55:55,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:55:55 BoogieIcfgContainer [2025-03-17 06:55:55,880 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:55:55,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:55:55,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:55:55,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:55:55,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:55:47" (1/3) ... [2025-03-17 06:55:55,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24671328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:55:55, skipping insertion in model container [2025-03-17 06:55:55,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:49" (2/3) ... [2025-03-17 06:55:55,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24671328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:55:55, skipping insertion in model container [2025-03-17 06:55:55,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:55:55" (3/3) ... [2025-03-17 06:55:55,888 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness_negated.i [2025-03-17 06:55:55,903 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:55:55,904 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_swap_harness_negated.i that has 16 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:55:55,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:55:55,978 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;@2f147fb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:55:55,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:55:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 95 states have (on average 1.168421052631579) internal successors, (111), 96 states have internal predecessors, (111), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-17 06:55:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 06:55:55,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:55:55,997 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2025-03-17 06:55:55,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:55:56,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:55:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -37826541, now seen corresponding path program 1 times [2025-03-17 06:55:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:55:56,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903207881] [2025-03-17 06:55:56,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:56:00,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:56:01,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:56:01,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:01,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 06:56:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:56:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903207881] [2025-03-17 06:56:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903207881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:56:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417482506] [2025-03-17 06:56:01,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:56:01,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:56:01,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:56:05,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:56:06,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:56:06,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:06,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:06,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:56:06,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:56:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 06:56:06,248 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:56:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417482506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:56:06,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:56:06,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:56:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880211390] [2025-03-17 06:56:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:56:06,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:56:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:56:06,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:56:06,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:56:06,284 INFO L87 Difference]: Start difference. First operand has 173 states, 95 states have (on average 1.168421052631579) internal successors, (111), 96 states have internal predecessors, (111), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2025-03-17 06:56:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:56:06,333 INFO L93 Difference]: Finished difference Result 340 states and 502 transitions. [2025-03-17 06:56:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:56:06,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 68 [2025-03-17 06:56:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:56:06,344 INFO L225 Difference]: With dead ends: 340 [2025-03-17 06:56:06,344 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 06:56:06,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:56:06,358 INFO L435 NwaCegarLoop]: 231 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, 231 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:56:06,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:56:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 06:56:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 06:56:06,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 94 states have internal predecessors, (107), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 06:56:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2025-03-17 06:56:06,420 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 68 [2025-03-17 06:56:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:56:06,420 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2025-03-17 06:56:06,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2025-03-17 06:56:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2025-03-17 06:56:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 06:56:06,426 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:56:06,426 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2025-03-17 06:56:06,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:56:06,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:56:06,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:56:06,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:56:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1679548342, now seen corresponding path program 1 times [2025-03-17 06:56:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:56:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327295764] [2025-03-17 06:56:06,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:56:10,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:56:11,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:56:11,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:11,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 06:56:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:56:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327295764] [2025-03-17 06:56:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327295764] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:56:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684645771] [2025-03-17 06:56:12,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:12,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:56:12,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:56:12,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:56:16,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:56:17,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:56:17,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:17,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:17,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:56:17,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:56:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:56:17,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:56:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684645771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:56:17,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:56:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:56:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726973982] [2025-03-17 06:56:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:56:17,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:56:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:56:17,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:56:17,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:56:17,875 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-17 06:56:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:56:19,004 INFO L93 Difference]: Finished difference Result 306 states and 423 transitions. [2025-03-17 06:56:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:56:19,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2025-03-17 06:56:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:56:19,008 INFO L225 Difference]: With dead ends: 306 [2025-03-17 06:56:19,008 INFO L226 Difference]: Without dead ends: 172 [2025-03-17 06:56:19,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:56:19,010 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 36 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:56:19,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 751 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:56:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-17 06:56:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-03-17 06:56:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 94 states have (on average 1.148936170212766) internal successors, (108), 96 states have internal predecessors, (108), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2025-03-17 06:56:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2025-03-17 06:56:19,032 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 237 transitions. Word has length 68 [2025-03-17 06:56:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:56:19,032 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 237 transitions. [2025-03-17 06:56:19,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-17 06:56:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 237 transitions. [2025-03-17 06:56:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:56:19,034 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:56:19,034 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2025-03-17 06:56:19,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:56:19,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 06:56:19,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:56:19,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:56:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1386579897, now seen corresponding path program 1 times [2025-03-17 06:56:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:56:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666377315] [2025-03-17 06:56:19,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:56:23,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:56:23,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:56:23,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:23,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-17 06:56:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:56:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666377315] [2025-03-17 06:56:26,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666377315] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:56:26,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336242636] [2025-03-17 06:56:26,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:26,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:26,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:56:26,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:56:26,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:56:30,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:56:30,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:56:30,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:30,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:30,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 4145 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:56:30,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:56:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 06:56:31,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:56:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336242636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:56:31,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:56:31,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2025-03-17 06:56:31,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094045244] [2025-03-17 06:56:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:56:31,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:56:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:56:31,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:56:31,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:56:31,951 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-17 06:56:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:56:33,865 INFO L93 Difference]: Finished difference Result 317 states and 446 transitions. [2025-03-17 06:56:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:56:33,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 83 [2025-03-17 06:56:33,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:56:33,867 INFO L225 Difference]: With dead ends: 317 [2025-03-17 06:56:33,867 INFO L226 Difference]: Without dead ends: 184 [2025-03-17 06:56:33,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:56:33,869 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 46 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:56:33,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1146 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 06:56:33,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-03-17 06:56:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2025-03-17 06:56:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 100 states have (on average 1.15) internal successors, (115), 102 states have internal predecessors, (115), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2025-03-17 06:56:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 254 transitions. [2025-03-17 06:56:33,885 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 254 transitions. Word has length 83 [2025-03-17 06:56:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:56:33,886 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 254 transitions. [2025-03-17 06:56:33,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-17 06:56:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 254 transitions. [2025-03-17 06:56:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 06:56:33,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:56:33,888 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1] [2025-03-17 06:56:33,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:56:34,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:34,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:56:34,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:56:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1484158935, now seen corresponding path program 1 times [2025-03-17 06:56:34,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:56:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583462184] [2025-03-17 06:56:34,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:56:37,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 06:56:39,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 06:56:39,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:39,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 06:56:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:56:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583462184] [2025-03-17 06:56:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583462184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:56:46,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303626442] [2025-03-17 06:56:46,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:56:46,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:56:46,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:56:50,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes.