./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:54:12,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:54:12,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:54:12,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:54:12,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:54:12,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:54:12,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:54:12,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:54:12,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:54:12,635 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:54:12,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:54:12,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:54:12,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:54:12,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:54:12,636 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:54:12,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:54:12,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:54:12,637 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:54:12,637 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:54:12,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:54:12,638 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:54:12,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:54:12,639 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 -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2025-03-17 06:54:12,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:54:12,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:54:12,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:54:12,878 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:54:12,878 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:54:12,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-03-17 06:54:14,004 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79607d50b/3fc31cbee16e4062b4fc58193a339312/FLAG0edcfdb24 [2025-03-17 06:54:14,484 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:54:14,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-03-17 06:54:14,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79607d50b/3fc31cbee16e4062b4fc58193a339312/FLAG0edcfdb24 [2025-03-17 06:54:14,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79607d50b/3fc31cbee16e4062b4fc58193a339312 [2025-03-17 06:54:14,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:54:14,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:54:14,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:54:14,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:54:14,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:54:14,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:54:14" (1/1) ... [2025-03-17 06:54:14,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac0f1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:14, skipping insertion in model container [2025-03-17 06:54:14,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:54:14" (1/1) ... [2025-03-17 06:54:14,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:54:14,848 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_pop_front_harness.i[4498,4511] [2025-03-17 06:54:14,855 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_pop_front_harness.i[4558,4571] [2025-03-17 06:54:15,320 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,321 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,322 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,323 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,323 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,338 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,338 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,339 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,340 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,629 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,633 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:54:15,707 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:54:15,721 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_pop_front_harness.i[4498,4511] [2025-03-17 06:54:15,721 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_pop_front_harness.i[4558,4571] [2025-03-17 06:54:15,767 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,769 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,773 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,774 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,774 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,774 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,776 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,858 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:54:15,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2025-03-17 06:54:15,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:54:16,015 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:54:16,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16 WrapperNode [2025-03-17 06:54:16,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:54:16,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:54:16,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:54:16,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:54:16,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,121 INFO L138 Inliner]: procedures = 680, calls = 1679, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2025-03-17 06:54:16,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:54:16,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:54:16,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:54:16,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:54:16,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,191 INFO L175 MemorySlicer]: Split 323 memory accesses to 6 slices as follows [238, 2, 6, 11, 63, 3]. 74 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 0, 5, 10, 1]. The 240 writes are split as follows [232, 0, 2, 0, 5, 1]. [2025-03-17 06:54:16,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,210 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:54:16,228 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:54:16,228 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:54:16,228 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:54:16,229 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (1/1) ... [2025-03-17 06:54:16,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:54:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:16,261 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 06:54:16,265 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 06:54:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2025-03-17 06:54:16,285 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2025-03-17 06:54:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:54:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:54:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:54:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:54:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:54:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:54:16,286 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:54:16,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:54:16,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:54:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:54:16,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:54:16,288 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-17 06:54:16,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:54:16,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:54:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 06:54:16,289 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:54:16,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:54:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:54:16,290 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:54:16,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2025-03-17 06:54:16,290 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2025-03-17 06:54:16,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:54:16,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:54:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:54:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:54:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:54:16,551 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:54:16,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:54:16,611 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:54:16,661 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:54:16,737 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3355: havoc #t~ret182#1; [2025-03-17 06:54:16,826 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 06:54:16,829 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:54:16,834 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7386: havoc #t~ret685.base, #t~ret685.offset; [2025-03-17 06:54:21,977 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc nondet_size_t_#t~nondet6#1; [2025-03-17 06:54:22,043 INFO L? ?]: Removed 121 outVars from TransFormulas that were not future-live. [2025-03-17 06:54:22,043 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:54:22,051 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:54:22,051 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:54:22,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:54:22 BoogieIcfgContainer [2025-03-17 06:54:22,052 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:54:22,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:54:22,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:54:22,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:54:22,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:54:14" (1/3) ... [2025-03-17 06:54:22,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4512667b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:54:22, skipping insertion in model container [2025-03-17 06:54:22,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:54:16" (2/3) ... [2025-03-17 06:54:22,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4512667b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:54:22, skipping insertion in model container [2025-03-17 06:54:22,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:54:22" (3/3) ... [2025-03-17 06:54:22,059 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2025-03-17 06:54:22,069 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:54:22,070 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_front_harness.i that has 17 procedures, 180 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:54:22,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:54:22,134 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;@3be2fad6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:54:22,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:54:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-17 06:54:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:54:22,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:22,148 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:22,149 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:22,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1875323876, now seen corresponding path program 1 times [2025-03-17 06:54:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:22,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213063113] [2025-03-17 06:54:22,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:26,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:54:26,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:54:26,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:26,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 06:54:27,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:27,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213063113] [2025-03-17 06:54:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213063113] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:54:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091898868] [2025-03-17 06:54:27,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:27,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:27,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:27,040 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 06:54:27,041 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 06:54:31,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:54:31,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:54:31,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:31,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:31,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:54:31,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:54:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 06:54:31,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:54:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091898868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:31,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:54:31,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:54:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523114107] [2025-03-17 06:54:31,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:31,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:54:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:31,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:54:31,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:54:31,568 INFO L87 Difference]: Start difference. First operand has 180 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 106 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-17 06:54:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:31,594 INFO L93 Difference]: Finished difference Result 354 states and 510 transitions. [2025-03-17 06:54:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:54:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2025-03-17 06:54:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:31,605 INFO L225 Difference]: With dead ends: 354 [2025-03-17 06:54:31,606 INFO L226 Difference]: Without dead ends: 177 [2025-03-17 06:54:31,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 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 06:54:31,611 INFO L435 NwaCegarLoop]: 239 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, 239 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 06:54:31,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:54:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-03-17 06:54:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2025-03-17 06:54:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 104 states have internal predecessors, (123), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-17 06:54:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 236 transitions. [2025-03-17 06:54:31,656 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 236 transitions. Word has length 83 [2025-03-17 06:54:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:31,656 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 236 transitions. [2025-03-17 06:54:31,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-17 06:54:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 236 transitions. [2025-03-17 06:54:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:54:31,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:31,661 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:31,676 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 06:54:31,862 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 06:54:31,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:31,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1103833950, now seen corresponding path program 1 times [2025-03-17 06:54:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042149563] [2025-03-17 06:54:31,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:35,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:54:35,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:54:35,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:35,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 06:54:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042149563] [2025-03-17 06:54:36,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042149563] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:54:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424849821] [2025-03-17 06:54:36,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:36,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:36,772 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 06:54:36,773 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 06:54:40,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:54:41,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:54:41,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:41,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:41,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:54:41,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:54:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-17 06:54:41,844 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:54:41,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424849821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:41,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:54:41,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:54:41,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24828499] [2025-03-17 06:54:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:41,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:54:41,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:41,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:54:41,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:54:41,846 INFO L87 Difference]: Start difference. First operand 177 states and 236 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-17 06:54:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:42,872 INFO L93 Difference]: Finished difference Result 320 states and 441 transitions. [2025-03-17 06:54:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:54:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2025-03-17 06:54:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:42,875 INFO L225 Difference]: With dead ends: 320 [2025-03-17 06:54:42,875 INFO L226 Difference]: Without dead ends: 179 [2025-03-17 06:54:42,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:54:42,877 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 35 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:42,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 776 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 06:54:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-17 06:54:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2025-03-17 06:54:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2025-03-17 06:54:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 247 transitions. [2025-03-17 06:54:42,892 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 247 transitions. Word has length 83 [2025-03-17 06:54:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:42,893 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 247 transitions. [2025-03-17 06:54:42,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-17 06:54:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2025-03-17 06:54:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-17 06:54:42,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:42,895 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:42,909 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 06:54:43,095 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 06:54:43,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:43,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1213550007, now seen corresponding path program 1 times [2025-03-17 06:54:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:43,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892124586] [2025-03-17 06:54:43,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:46,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 06:54:46,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 06:54:46,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:46,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 06:54:47,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:47,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892124586] [2025-03-17 06:54:47,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892124586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:54:47,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857419446] [2025-03-17 06:54:47,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:47,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:47,999 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 06:54:48,000 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 06:54:51,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 06:54:52,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 06:54:52,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:52,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:52,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:54:52,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:54:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-17 06:54:53,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:54:53,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857419446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:53,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:54:53,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 06:54:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816986836] [2025-03-17 06:54:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:53,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:54:53,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:53,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:54:53,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:54:53,372 INFO L87 Difference]: Start difference. First operand 179 states and 247 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-17 06:54:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:54,823 INFO L93 Difference]: Finished difference Result 312 states and 435 transitions. [2025-03-17 06:54:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:54:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 98 [2025-03-17 06:54:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:54,825 INFO L225 Difference]: With dead ends: 312 [2025-03-17 06:54:54,825 INFO L226 Difference]: Without dead ends: 179 [2025-03-17 06:54:54,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:54:54,826 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 75 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:54,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1128 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 06:54:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-03-17 06:54:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2025-03-17 06:54:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2025-03-17 06:54:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2025-03-17 06:54:54,841 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 98 [2025-03-17 06:54:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:54,841 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2025-03-17 06:54:54,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-17 06:54:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2025-03-17 06:54:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 06:54:54,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:54,847 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:54:54,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 06:54:55,047 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 06:54:55,047 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:55,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1658752312, now seen corresponding path program 2 times [2025-03-17 06:54:55,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:55,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613792095] [2025-03-17 06:54:55,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:54:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:58,646 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes. [2025-03-17 06:54:59,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 06:54:59,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:54:59,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-17 06:55:02,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:55:02,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613792095] [2025-03-17 06:55:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613792095] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:55:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084896985] [2025-03-17 06:55:02,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:55:02,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:55:02,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:02,029 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 06:55:02,031 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 06:55:06,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes.