./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1 --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 f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:32:02,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:32:02,751 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 15:32:02,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:32:02,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:32:02,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:32:02,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:32:02,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:32:02,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:32:02,780 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:32:02,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:32:02,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:32:02,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:32:02,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:32:02,781 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:32:02,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:32:02,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:32:02,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:02,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:02,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:02,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:32:02,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:32:02,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:32:02,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:32:02,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:32:02,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:32:02,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:32:02,784 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1 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 -> f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 [2024-12-02 15:32:03,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:32:03,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:32:03,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:32:03,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:32:03,078 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:32:03,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2024-12-02 15:32:06,042 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/data/0c89cea76/877e892ba16b4888922ddbc6460af46b/FLAGe348270fd [2024-12-02 15:32:06,452 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:32:06,453 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2024-12-02 15:32:06,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/data/0c89cea76/877e892ba16b4888922ddbc6460af46b/FLAGe348270fd [2024-12-02 15:32:06,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/data/0c89cea76/877e892ba16b4888922ddbc6460af46b [2024-12-02 15:32:06,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:32:06,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:32:06,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:06,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:32:06,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:32:06,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:06" (1/1) ... [2024-12-02 15:32:06,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0575c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:06, skipping insertion in model container [2024-12-02 15:32:06,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:06" (1/1) ... [2024-12-02 15:32:06,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:32:06,887 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4497,4510] [2024-12-02 15:32:06,893 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4557,4570] [2024-12-02 15:32:07,640 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,641 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,641 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,642 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,643 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:07,660 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,269 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:08,382 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:32:08,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4497,4510] [2024-12-02 15:32:08,394 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i[4557,4570] [2024-12-02 15:32:08,430 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,430 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,430 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,431 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,431 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,436 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,436 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-12-02 15:32:08,541 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,541 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:32:08,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-12-02 15:32:08,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:08,760 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:32:08,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08 WrapperNode [2024-12-02 15:32:08,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:08,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:08,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:32:08,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:32:08,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,880 INFO L138 Inliner]: procedures = 679, calls = 2636, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 884 [2024-12-02 15:32:08,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:08,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:32:08,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:32:08,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:32:08,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,966 INFO L175 MemorySlicer]: Split 555 memory accesses to 7 slices as follows [2, 257, 6, 240, 37, 8, 5]. 46 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 0, 0, 6, 4, 2, 5]. The 498 writes are split as follows [0, 257, 2, 232, 7, 0, 0]. [2024-12-02 15:32:08,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:08,999 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:32:09,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:32:09,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:32:09,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:32:09,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (1/1) ... [2024-12-02 15:32:09,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:09,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:32:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:32:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-12-02 15:32:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-12-02 15:32:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:32:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 15:32:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 15:32:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 15:32:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 15:32:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 15:32:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:32:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:32:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:32:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:32:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:32:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:32:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 15:32:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 15:32:09,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 15:32:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:32:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 15:32:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 15:32:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 15:32:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:32:09,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:32:09,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 15:32:09,401 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:32:09,404 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:32:17,536 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-12-02 15:32:17,537 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:32:17,549 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:32:17,550 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 15:32:17,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:17 BoogieIcfgContainer [2024-12-02 15:32:17,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:32:17,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:32:17,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:32:17,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:32:17,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:06" (1/3) ... [2024-12-02 15:32:17,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39319633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:17, skipping insertion in model container [2024-12-02 15:32:17,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:08" (2/3) ... [2024-12-02 15:32:17,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39319633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:17, skipping insertion in model container [2024-12-02 15:32:17,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:17" (3/3) ... [2024-12-02 15:32:17,561 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_advance_harness.i [2024-12-02 15:32:17,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:32:17,580 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_cursor_advance_harness.i that has 7 procedures, 90 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 15:32:17,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:17,656 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;@30c4e59e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:17,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:32:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 61 states have internal predecessors, (76), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 15:32:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 15:32:17,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:17,666 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 15:32:17,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:17,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1544401272, now seen corresponding path program 1 times [2024-12-02 15:32:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130020169] [2024-12-02 15:32:17,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:34:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 15:34:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:34:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130020169] [2024-12-02 15:34:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130020169] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385687682] [2024-12-02 15:34:03,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:03,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:34:03,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:34:03,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:34:03,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:35:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:35:42,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 7593 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:35:42,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:35:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:35:42,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:35:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385687682] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:35:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:35:42,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:35:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62030989] [2024-12-02 15:35:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:35:42,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:35:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:35:42,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:35:42,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:35:42,555 INFO L87 Difference]: Start difference. First operand has 90 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 61 states have internal predecessors, (76), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:35:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:35:42,577 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-12-02 15:35:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:35:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-12-02 15:35:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:35:42,584 INFO L225 Difference]: With dead ends: 170 [2024-12-02 15:35:42,584 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 15:35:42,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:35:42,589 INFO L435 NwaCegarLoop]: 118 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, 118 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 [2024-12-02 15:35:42,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:35:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 15:35:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-02 15:35:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 54 states have internal predecessors, (64), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 15:35:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2024-12-02 15:35:42,620 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 47 [2024-12-02 15:35:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:35:42,621 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2024-12-02 15:35:42,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:35:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2024-12-02 15:35:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 15:35:42,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:35:42,624 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 15:35:42,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:35:42,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:35:42,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:35:42,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:35:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1752129924, now seen corresponding path program 1 times [2024-12-02 15:35:42,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:35:42,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599781962] [2024-12-02 15:35:42,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:35:42,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:37:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:37:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:37:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:37:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599781962] [2024-12-02 15:37:10,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599781962] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:37:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064732917] [2024-12-02 15:37:10,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:37:10,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:37:10,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:37:10,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:37:10,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:38:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:38:39,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 7593 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:38:39,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:38:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:38:39,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:38:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064732917] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:38:39,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:38:39,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 15:38:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102367055] [2024-12-02 15:38:39,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:38:39,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:38:39,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:38:39,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:38:39,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:39,165 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:38:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:38:39,223 INFO L93 Difference]: Finished difference Result 128 states and 170 transitions. [2024-12-02 15:38:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:38:39,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-12-02 15:38:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:38:39,225 INFO L225 Difference]: With dead ends: 128 [2024-12-02 15:38:39,225 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 15:38:39,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:38:39,226 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:38:39,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:38:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 15:38:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-02 15:38:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 55 states have internal predecessors, (65), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 15:38:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2024-12-02 15:38:39,235 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 106 transitions. Word has length 47 [2024-12-02 15:38:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:38:39,236 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 106 transitions. [2024-12-02 15:38:39,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:38:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2024-12-02 15:38:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 15:38:39,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:38:39,237 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-12-02 15:38:39,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 15:38:39,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:38:39,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:38:39,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:38:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1051065346, now seen corresponding path program 1 times [2024-12-02 15:38:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:38:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85190431] [2024-12-02 15:38:39,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:38:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:40:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:40:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:40:06,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:40:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85190431] [2024-12-02 15:40:06,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85190431] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:40:06,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30305032] [2024-12-02 15:40:06,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:40:06,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:40:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:40:06,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:40:06,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:41:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:34,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 7566 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:41:34,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:41:35,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:41:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30305032] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:35,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:41:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 15:41:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047369192] [2024-12-02 15:41:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:35,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:41:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:35,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:41:35,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:41:35,107 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:41:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:35,714 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2024-12-02 15:41:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:41:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-12-02 15:41:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:35,717 INFO L225 Difference]: With dead ends: 148 [2024-12-02 15:41:35,717 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 15:41:35,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:41:35,718 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 113 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:35,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 199 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:41:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 15:41:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-12-02 15:41:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 58 states have internal predecessors, (67), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2024-12-02 15:41:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2024-12-02 15:41:35,729 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 47 [2024-12-02 15:41:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:35,729 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2024-12-02 15:41:35,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-12-02 15:41:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2024-12-02 15:41:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:41:35,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:35,731 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-12-02 15:41:35,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 15:41:35,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:35,931 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:35,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash -54586649, now seen corresponding path program 1 times [2024-12-02 15:41:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:35,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67081765] [2024-12-02 15:41:35,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:35,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:43:09,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67081765] [2024-12-02 15:43:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67081765] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:43:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057300736] [2024-12-02 15:43:09,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:43:09,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:43:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:43:09,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:43:09,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:44:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:42,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 7571 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:44:42,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:44:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 15:44:43,362 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:44:43,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057300736] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:43,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:44:43,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 15:44:43,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987829246] [2024-12-02 15:44:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:43,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:44:43,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:43,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:44:43,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:44:43,363 INFO L87 Difference]: Start difference. First operand 84 states and 112 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 15:44:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:44,377 INFO L93 Difference]: Finished difference Result 143 states and 191 transitions. [2024-12-02 15:44:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 15:44:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2024-12-02 15:44:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:44,379 INFO L225 Difference]: With dead ends: 143 [2024-12-02 15:44:44,379 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 15:44:44,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:44:44,380 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 118 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:44,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 334 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:44:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 15:44:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-12-02 15:44:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 58 states have internal predecessors, (67), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2024-12-02 15:44:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-12-02 15:44:44,386 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 49 [2024-12-02 15:44:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:44,386 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-12-02 15:44:44,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 15:44:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-12-02 15:44:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 15:44:44,387 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:44,388 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-12-02 15:44:44,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 15:44:44,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e933b025-471b-4983-b521-e5abc38b33b1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:44:44,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:44,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -899778575, now seen corresponding path program 1 times [2024-12-02 15:44:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854351674] [2024-12-02 15:44:44,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 15:46:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854351674] [2024-12-02 15:46:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854351674] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:46:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:46:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:46:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506421802] [2024-12-02 15:46:18,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:46:18,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:46:18,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:18,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:46:18,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:46:18,636 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 15:46:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:19,047 INFO L93 Difference]: Finished difference Result 96 states and 126 transitions. [2024-12-02 15:46:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:46:19,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2024-12-02 15:46:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:19,048 INFO L225 Difference]: With dead ends: 96 [2024-12-02 15:46:19,048 INFO L226 Difference]: Without dead ends: 94 [2024-12-02 15:46:19,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:46:19,049 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 3 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:19,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:46:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-12-02 15:46:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-12-02 15:46:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 65 states have internal predecessors, (73), 23 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2024-12-02 15:46:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 123 transitions. [2024-12-02 15:46:19,061 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 123 transitions. Word has length 53 [2024-12-02 15:46:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:19,062 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 123 transitions. [2024-12-02 15:46:19,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 15:46:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 123 transitions. [2024-12-02 15:46:19,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 15:46:19,063 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:19,063 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 15:46:19,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:46:19,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:19,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1909226169, now seen corresponding path program 1 times [2024-12-02 15:46:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196130252] [2024-12-02 15:46:19,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms