./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd --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 f32a256e85dfae47c8548ef83bd17812a642f36aa6564d2121f4ad41349db94a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:34:15,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:34:15,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 13:34:15,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:34:15,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:34:15,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:34:15,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:34:15,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:34:15,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:34:15,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:34:15,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:34:15,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:34:15,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:34:15,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:34:15,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:34:15,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:34:15,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:34:15,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:34:15,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:34:15,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:34:15,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:34:15,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:34:15,168 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_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd 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 -> f32a256e85dfae47c8548ef83bd17812a642f36aa6564d2121f4ad41349db94a [2024-11-13 13:34:15,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:34:15,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:34:15,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:34:15,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:34:15,605 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:34:15,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i Unable to find full path for "g++" [2024-11-13 13:34:17,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:34:18,510 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:34:18,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2024-11-13 13:34:18,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/data/5a3098eaf/a0b4eb51ea194ff1a7a99a62883472a1/FLAG939de236e [2024-11-13 13:34:18,578 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/data/5a3098eaf/a0b4eb51ea194ff1a7a99a62883472a1 [2024-11-13 13:34:18,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:34:18,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:34:18,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:34:18,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:34:18,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:34:18,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:34:18" (1/1) ... [2024-11-13 13:34:18,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fea79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:18, skipping insertion in model container [2024-11-13 13:34:18,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:34:18" (1/1) ... [2024-11-13 13:34:18,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:34:19,006 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_018c96d8-8426-409d-9f4c-b6574fbf0dca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2024-11-13 13:34:19,014 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_018c96d8-8426-409d-9f4c-b6574fbf0dca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2024-11-13 13:34:20,254 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,255 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,255 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,257 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,263 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,289 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,292 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:20,293 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,125 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,125 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,226 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,227 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:34:21,458 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:34:21,480 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_018c96d8-8426-409d-9f4c-b6574fbf0dca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2024-11-13 13:34:21,481 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_018c96d8-8426-409d-9f4c-b6574fbf0dca/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2024-11-13 13:34:21,556 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,557 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,557 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,559 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,560 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,575 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,575 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,576 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,577 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,691 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,692 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,803 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8297] [2024-11-13 13:34:21,805 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,806 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:34:21,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8783-8794] [2024-11-13 13:34:21,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:34:22,176 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:34:22,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22 WrapperNode [2024-11-13 13:34:22,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:34:22,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:34:22,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:34:22,180 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:34:22,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,457 INFO L138 Inliner]: procedures = 680, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 971 [2024-11-13 13:34:22,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:34:22,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:34:22,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:34:22,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:34:22,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,594 INFO L175 MemorySlicer]: Split 572 memory accesses to 9 slices as follows [32, 2, 257, 238, 9, 4, 20, 1, 9]. 45 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [4, 2, 0, 6, 5, 2, 2, 0, 4]. The 494 writes are split as follows [3, 0, 257, 232, 1, 0, 1, 0, 0]. [2024-11-13 13:34:22,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:34:22,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:34:22,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:34:22,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:34:22,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (1/1) ... [2024-11-13 13:34:22,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:34:22,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:34:22,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:34:22,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:34:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-13 13:34:22,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-13 13:34:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-13 13:34:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-13 13:34:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-13 13:34:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-13 13:34:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-13 13:34:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-13 13:34:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:34:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:34:22,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:34:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-13 13:34:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-13 13:34:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-13 13:34:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-13 13:34:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:34:22,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-13 13:34:22,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 13:34:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-13 13:34:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-13 13:34:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-13 13:34:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-11-13 13:34:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-13 13:34:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 13:34:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 13:34:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 13:34:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:34:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:34:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:34:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 13:34:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 13:34:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 13:34:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 13:34:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 13:34:22,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 13:34:23,358 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:34:23,361 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:34:33,592 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-13 13:34:33,592 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:34:33,616 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:34:33,616 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:34:33,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:34:33 BoogieIcfgContainer [2024-11-13 13:34:33,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:34:33,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:34:33,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:34:33,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:34:33,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:34:18" (1/3) ... [2024-11-13 13:34:33,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5e696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:34:33, skipping insertion in model container [2024-11-13 13:34:33,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:34:22" (2/3) ... [2024-11-13 13:34:33,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5e696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:34:33, skipping insertion in model container [2024-11-13 13:34:33,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:34:33" (3/3) ... [2024-11-13 13:34:33,632 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2024-11-13 13:34:33,651 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:34:33,653 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_with_lookup_harness.i that has 13 procedures, 163 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:34:33,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:34:33,763 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;@6f1f2d3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:34:33,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:34:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-13 13:34:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 13:34:33,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:33,786 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:33,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:33,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash -805765901, now seen corresponding path program 1 times [2024-11-13 13:34:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:34:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950655915] [2024-11-13 13:34:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:33,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:36:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:36:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:36:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 13:36:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:36:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 13:36:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 13:36:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 13:36:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:36:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:36:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:36:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:36:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 13:36:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 13:36:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 13:36:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-13 13:36:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 13:36:09,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950655915] [2024-11-13 13:36:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950655915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:09,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:36:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277028454] [2024-11-13 13:36:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:09,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:09,791 INFO L87 Difference]: Start difference. First operand has 163 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:36:14,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-13 13:36:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:36:16,368 INFO L93 Difference]: Finished difference Result 322 states and 455 transitions. [2024-11-13 13:36:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:16,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2024-11-13 13:36:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:36:16,382 INFO L225 Difference]: With dead ends: 322 [2024-11-13 13:36:16,382 INFO L226 Difference]: Without dead ends: 158 [2024-11-13 13:36:16,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:16,390 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 79 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:36:16,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 177 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2024-11-13 13:36:16,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-13 13:36:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-13 13:36:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 102 states have internal predecessors, (122), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-13 13:36:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 209 transitions. [2024-11-13 13:36:16,455 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 209 transitions. Word has length 106 [2024-11-13 13:36:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:36:16,455 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 209 transitions. [2024-11-13 13:36:16,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:36:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 209 transitions. [2024-11-13 13:36:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 13:36:16,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:36:16,464 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:16,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:36:16,465 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:36:16,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash 537977151, now seen corresponding path program 1 times [2024-11-13 13:36:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537573875] [2024-11-13 13:36:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:57,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:37:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:57,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:37:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:57,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:37:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:57,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 13:37:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:57,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:37:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-13 13:37:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-13 13:37:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 13:37:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:37:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:37:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:37:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:37:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 13:37:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 13:37:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 13:37:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-13 13:37:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-13 13:37:58,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:58,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537573875] [2024-11-13 13:37:58,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537573875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:58,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369248023] [2024-11-13 13:37:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:58,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:58,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:58,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:39:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:39:34,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:39:34,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:39:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 13:39:35,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:39:35,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369248023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:39:35,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:39:35,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-13 13:39:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949823272] [2024-11-13 13:39:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:39:35,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:39:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:39:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:39:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:39:35,798 INFO L87 Difference]: Start difference. First operand 158 states and 209 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 13:39:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:39:38,026 INFO L93 Difference]: Finished difference Result 302 states and 403 transitions. [2024-11-13 13:39:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:39:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2024-11-13 13:39:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:39:38,032 INFO L225 Difference]: With dead ends: 302 [2024-11-13 13:39:38,032 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 13:39:38,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:39:38,035 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 212 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:39:38,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 593 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 13:39:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 13:39:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-13 13:39:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-13 13:39:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 214 transitions. [2024-11-13 13:39:38,062 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 214 transitions. Word has length 106 [2024-11-13 13:39:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:39:38,063 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 214 transitions. [2024-11-13 13:39:38,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 13:39:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 214 transitions. [2024-11-13 13:39:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 13:39:38,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:39:38,068 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:39:38,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:39:38,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:39:38,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:39:38,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:39:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -63517870, now seen corresponding path program 1 times [2024-11-13 13:39:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:39:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108663540] [2024-11-13 13:39:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:39:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:41:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:41:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:41:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:41:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 13:41:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:41:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:41:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 13:41:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 13:41:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:41:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:41:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:41:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 13:41:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 13:41:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 13:41:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-13 13:41:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-13 13:41:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:41:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-13 13:41:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:41:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108663540] [2024-11-13 13:41:19,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108663540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:41:19,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165166452] [2024-11-13 13:41:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:41:19,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:41:19,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:41:19,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:41:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:43:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:04,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 7755 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:43:04,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 13:43:05,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:43:05,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165166452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:05,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:43:05,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-11-13 13:43:05,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774267279] [2024-11-13 13:43:05,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:05,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:43:05,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:43:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:43:05,017 INFO L87 Difference]: Start difference. First operand 161 states and 214 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:43:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:43:05,179 INFO L93 Difference]: Finished difference Result 308 states and 415 transitions. [2024-11-13 13:43:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-13 13:43:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:43:05,185 INFO L225 Difference]: With dead ends: 308 [2024-11-13 13:43:05,185 INFO L226 Difference]: Without dead ends: 164 [2024-11-13 13:43:05,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:43:05,189 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 1 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:43:05,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 612 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:43:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-13 13:43:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2024-11-13 13:43:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 105 states have (on average 1.2) internal successors, (126), 107 states have internal predecessors, (126), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-13 13:43:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 216 transitions. [2024-11-13 13:43:05,222 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 216 transitions. Word has length 112 [2024-11-13 13:43:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:43:05,223 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 216 transitions. [2024-11-13 13:43:05,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:43:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 216 transitions. [2024-11-13 13:43:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 13:43:05,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:43:05,230 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:05,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:43:05,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:05,432 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:43:05,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1206020336, now seen corresponding path program 1 times [2024-11-13 13:43:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281040326] [2024-11-13 13:43:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:44:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:52,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:44:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:52,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:44:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:44:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 13:44:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:44:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:44:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 13:44:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 13:44:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:44:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:44:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:44:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 13:44:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 13:44:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 13:44:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-13 13:44:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-13 13:44:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:44:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-13 13:44:53,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:44:53,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281040326] [2024-11-13 13:44:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281040326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:44:53,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684725709] [2024-11-13 13:44:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:44:53,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:44:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:44:53,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:44:53,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:46:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:45,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 7750 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:46:45,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 13:46:45,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684725709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:45,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:45,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-11-13 13:46:45,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46670085] [2024-11-13 13:46:45,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:45,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:46:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:45,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:46:45,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:46:45,148 INFO L87 Difference]: Start difference. First operand 163 states and 216 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:46:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:46:45,301 INFO L93 Difference]: Finished difference Result 311 states and 418 transitions. [2024-11-13 13:46:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:46:45,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-13 13:46:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:46:45,307 INFO L225 Difference]: With dead ends: 311 [2024-11-13 13:46:45,307 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 13:46:45,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:46:45,313 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:46:45,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 613 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:46:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 13:46:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-13 13:46:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 109 states have internal predecessors, (128), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-13 13:46:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2024-11-13 13:46:45,354 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 112 [2024-11-13 13:46:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:46:45,354 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2024-11-13 13:46:45,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 13:46:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2024-11-13 13:46:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 13:46:45,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:46:45,361 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:45,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:46:45,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:45,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:46:45,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1630275820, now seen corresponding path program 1 times [2024-11-13 13:46:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120013367] [2024-11-13 13:46:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:48:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:29,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:48:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:29,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 13:48:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:29,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:48:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:29,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 13:48:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 13:48:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-13 13:48:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-13 13:48:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 13:48:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:48:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:48:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-13 13:48:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 13:48:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 13:48:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-13 13:48:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-13 13:48:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-13 13:48:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:48:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-13 13:48:30,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:48:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120013367] [2024-11-13 13:48:30,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120013367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:48:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696957722] [2024-11-13 13:48:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:48:30,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:48:30,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:48:30,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:48:30,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_018c96d8-8426-409d-9f4c-b6574fbf0dca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process