./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB --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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:35:34,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:35:34,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:35:34,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:35:34,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:35:34,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:35:34,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:35:34,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:35:34,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:35:34,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:35:34,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:35:34,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:35:34,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:35:34,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:35:34,286 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:35:34,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:35:34,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:35:34,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:35:34,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:35:34,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:34,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:34,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:34,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:34,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:35:34,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:34,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:34,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:34,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:34,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:35:34,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:35:34,291 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_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB 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 -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2024-11-28 04:35:34,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:35:34,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:35:34,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:35:34,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:35:34,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:35:34,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-11-28 04:35:37,663 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/data/647f4596a/9cc6e0b7f25d4b00a1974bd5583a28c3/FLAG3d8e51300 [2024-11-28 04:35:38,242 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:35:38,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2024-11-28 04:35:38,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/data/647f4596a/9cc6e0b7f25d4b00a1974bd5583a28c3/FLAG3d8e51300 [2024-11-28 04:35:38,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/data/647f4596a/9cc6e0b7f25d4b00a1974bd5583a28c3 [2024-11-28 04:35:38,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:35:38,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:35:38,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:38,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:35:38,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:35:38,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:38" (1/1) ... [2024-11-28 04:35:38,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140f0c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:38, skipping insertion in model container [2024-11-28 04:35:38,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:38" (1/1) ... [2024-11-28 04:35:38,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:35:38,695 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_f3be5f31-33ab-4d20-885c-cfd48ca9d358/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-11-28 04:35:38,702 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_f3be5f31-33ab-4d20-885c-cfd48ca9d358/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-11-28 04:35:39,693 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,694 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,695 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,695 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,697 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,712 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,713 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,715 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:39,716 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,696 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,696 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:40,846 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:35:40,861 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_f3be5f31-33ab-4d20-885c-cfd48ca9d358/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4499,4512] [2024-11-28 04:35:40,862 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_f3be5f31-33ab-4d20-885c-cfd48ca9d358/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i[4559,4572] [2024-11-28 04:35:40,903 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,903 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,904 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,904 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,905 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,911 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,911 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,912 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:40,913 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:41,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-11-28 04:35:41,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:41,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:35:41,082 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-11-28 04:35:41,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:41,441 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:35:41,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41 WrapperNode [2024-11-28 04:35:41,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:41,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:41,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:35:41,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:35:41,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,685 INFO L138 Inliner]: procedures = 679, calls = 2728, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 815 [2024-11-28 04:35:41,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:41,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:35:41,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:35:41,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:35:41,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,776 INFO L175 MemorySlicer]: Split 518 memory accesses to 6 slices as follows [2, 257, 238, 2, 14, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 0, 5]. The 494 writes are split as follows [0, 257, 232, 1, 4, 0]. [2024-11-28 04:35:41,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:35:41,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:35:41,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:35:41,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:35:41,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (1/1) ... [2024-11-28 04:35:41,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:41,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:41,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:35:41,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:35:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-28 04:35:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-28 04:35:41,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 04:35:41,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-11-28 04:35:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-28 04:35:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:35:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-28 04:35:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-28 04:35:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-28 04:35:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-28 04:35:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-28 04:35:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-28 04:35:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-28 04:35:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-28 04:35:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 04:35:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 04:35:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:35:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:35:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:35:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:35:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:35:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:35:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:35:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:35:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:35:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 04:35:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:35:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:35:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 04:35:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 04:35:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-28 04:35:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:35:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-28 04:35:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 04:35:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 04:35:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2024-11-28 04:35:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 04:35:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 04:35:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 04:35:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:35:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-11-28 04:35:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:35:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:35:42,373 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:35:42,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:35:42,566 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:35:42,634 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-11-28 04:35:42,634 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-11-28 04:35:51,726 INFO L? ?]: Removed 174 outVars from TransFormulas that were not future-live. [2024-11-28 04:35:51,726 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:35:51,741 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:35:51,741 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:35:51,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:51 BoogieIcfgContainer [2024-11-28 04:35:51,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:35:51,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:35:51,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:35:51,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:35:51,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:35:38" (1/3) ... [2024-11-28 04:35:51,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a30368a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:51, skipping insertion in model container [2024-11-28 04:35:51,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:41" (2/3) ... [2024-11-28 04:35:51,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a30368a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:51, skipping insertion in model container [2024-11-28 04:35:51,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:51" (3/3) ... [2024-11-28 04:35:51,757 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2024-11-28 04:35:51,772 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:35:51,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_new_from_c_str_harness.i that has 21 procedures, 162 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2024-11-28 04:35:51,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:35:51,854 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;@18314991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:35:51,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:35:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:35:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:35:51,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:51,870 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:51,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:51,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1565145841, now seen corresponding path program 1 times [2024-11-28 04:35:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2676264] [2024-11-28 04:35:51,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:37:21,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:21,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2676264] [2024-11-28 04:37:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2676264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118614517] [2024-11-28 04:37:21,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:21,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:21,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:21,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:38:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:52,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 7630 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:38:52,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 04:38:52,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:38:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118614517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:38:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:38:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668850304] [2024-11-28 04:38:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:52,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:38:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:52,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:38:52,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:38:52,356 INFO L87 Difference]: Start difference. First operand has 137 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:38:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:52,397 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2024-11-28 04:38:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:38:52,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2024-11-28 04:38:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:52,409 INFO L225 Difference]: With dead ends: 268 [2024-11-28 04:38:52,409 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 04:38:52,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:38:52,417 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:52,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:38:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 04:38:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-28 04:38:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:38:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-11-28 04:38:52,480 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 75 [2024-11-28 04:38:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:52,481 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-11-28 04:38:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:38:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-11-28 04:38:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:38:52,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:52,485 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:52,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:38:52,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3be5f31-33ab-4d20-885c-cfd48ca9d358/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:38:52,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:52,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash 46619501, now seen corresponding path program 1 times [2024-11-28 04:38:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:52,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210684952] [2024-11-28 04:38:52,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:40:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210684952] [2024-11-28 04:40:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210684952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:37,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:40:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120942674] [2024-11-28 04:40:37,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:37,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:40:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:37,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:40:37,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:40:37,188 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:40:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:37,434 INFO L93 Difference]: Finished difference Result 180 states and 218 transitions. [2024-11-28 04:40:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:40:37,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2024-11-28 04:40:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:37,440 INFO L225 Difference]: With dead ends: 180 [2024-11-28 04:40:37,444 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:40:37,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:40:37,445 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:37,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:40:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:40:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-28 04:40:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-28 04:40:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-11-28 04:40:37,484 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 75 [2024-11-28 04:40:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:37,485 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-11-28 04:40:37,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:40:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-11-28 04:40:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:40:37,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:37,491 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:37,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:40:37,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:37,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1796237082, now seen corresponding path program 1 times [2024-11-28 04:40:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:37,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526172709] [2024-11-28 04:40:37,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:42:25,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526172709] [2024-11-28 04:42:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526172709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:42:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97626967] [2024-11-28 04:42:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:25,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:25,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:25,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:25,007 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 04:42:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:25,263 INFO L93 Difference]: Finished difference Result 180 states and 217 transitions. [2024-11-28 04:42:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:42:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 81 [2024-11-28 04:42:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:25,266 INFO L225 Difference]: With dead ends: 180 [2024-11-28 04:42:25,267 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 04:42:25,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:25,268 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:25,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:42:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 04:42:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-28 04:42:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 90 states have internal predecessors, (101), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2024-11-28 04:42:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2024-11-28 04:42:25,297 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 81 [2024-11-28 04:42:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:25,298 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2024-11-28 04:42:25,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-28 04:42:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2024-11-28 04:42:25,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:42:25,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:25,301 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:25,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:42:25,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:25,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2102665871, now seen corresponding path program 1 times [2024-11-28 04:42:25,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439962623] [2024-11-28 04:42:25,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:44:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439962623] [2024-11-28 04:44:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439962623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:44:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718342829] [2024-11-28 04:44:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:19,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:44:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:19,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:44:19,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:44:19,572 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:44:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:20,568 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2024-11-28 04:44:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:44:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2024-11-28 04:44:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:20,579 INFO L225 Difference]: With dead ends: 147 [2024-11-28 04:44:20,579 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 04:44:20,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:44:20,584 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 13 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:20,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1470 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:44:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 04:44:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2024-11-28 04:44:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 79 states have internal predecessors, (87), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 04:44:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2024-11-28 04:44:20,610 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 83 [2024-11-28 04:44:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:20,610 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2024-11-28 04:44:20,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:44:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2024-11-28 04:44:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:44:20,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:20,617 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:20,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:44:20,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:20,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1369317466, now seen corresponding path program 1 times [2024-11-28 04:44:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333011121] [2024-11-28 04:44:20,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 04:46:06,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333011121] [2024-11-28 04:46:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333011121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:06,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:06,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:46:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948085609] [2024-11-28 04:46:06,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:06,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:06,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:06,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:06,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:06,349 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:46:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:06,564 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2024-11-28 04:46:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:46:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2024-11-28 04:46:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:06,568 INFO L225 Difference]: With dead ends: 188 [2024-11-28 04:46:06,568 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:46:06,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:06,569 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:06,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:46:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:46:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-28 04:46:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 33 states have call successors, (33), 15 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2024-11-28 04:46:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2024-11-28 04:46:06,583 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 124 [2024-11-28 04:46:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:06,583 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2024-11-28 04:46:06,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:46:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2024-11-28 04:46:06,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:46:06,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:06,586 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:06,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:46:06,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:06,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash 895563120, now seen corresponding path program 1 times [2024-11-28 04:46:06,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058427283] [2024-11-28 04:46:06,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:06,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 04:47:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058427283] [2024-11-28 04:47:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058427283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:52,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:47:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980060177] [2024-11-28 04:47:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:52,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:47:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:52,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:47:52,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:47:52,126 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-28 04:47:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:52,530 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2024-11-28 04:47:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:47:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2024-11-28 04:47:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:52,533 INFO L225 Difference]: With dead ends: 187 [2024-11-28 04:47:52,534 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 04:47:52,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:47:52,535 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:52,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1168 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 04:47:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-28 04:47:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 78 states have internal predecessors, (84), 32 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-28 04:47:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-28 04:47:52,556 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 130 [2024-11-28 04:47:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:52,557 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-28 04:47:52,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-28 04:47:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-28 04:47:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:47:52,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:52,562 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:52,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:47:52,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:52,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -393298334, now seen corresponding path program 1 times [2024-11-28 04:47:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:52,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074675023] [2024-11-28 04:47:52,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:52,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-28 04:49:42,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074675023] [2024-11-28 04:49:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074675023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 04:49:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338633421] [2024-11-28 04:49:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:42,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:49:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:42,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:49:42,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:49:42,065 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:49:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:43,954 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2024-11-28 04:49:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:49:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2024-11-28 04:49:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:43,959 INFO L225 Difference]: With dead ends: 175 [2024-11-28 04:49:43,959 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:49:43,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:49:43,960 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 11 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:43,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1717 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:49:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:49:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-11-28 04:49:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 83 states have internal predecessors, (89), 32 states have call successors, (32), 15 states have call predecessors, (32), 16 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-28 04:49:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-11-28 04:49:43,973 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 135 [2024-11-28 04:49:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:43,973 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-11-28 04:49:43,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:49:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-11-28 04:49:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:49:43,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:43,976 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:43,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:49:43,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:43,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 416048292, now seen corresponding path program 1 times [2024-11-28 04:49:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802634173] [2024-11-28 04:49:43,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms