./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX --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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:04:21,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:04:21,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 16:04:21,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:04:21,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:04:21,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:04:21,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:04:21,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:04:21,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:04:21,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:04:21,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:04:21,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:04:21,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:04:21,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:04:21,890 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:04:21,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:04:21,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:04:21,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:04:21,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:04:21,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:04:21,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:04:21,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:04:21,898 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:04:21,898 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:04:21,898 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:04:21,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:04:21,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:04:21,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:04:21,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:04:21,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:21,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:04:21,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:04:21,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:04:21,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:04:21,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:04:21,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:04:21,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:04:21,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:04:21,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:04:21,906 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2024-11-08 16:04:22,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:04:22,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:04:22,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:04:22,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:04:22,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:04:22,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i Unable to find full path for "g++" [2024-11-08 16:04:24,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:04:25,114 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:04:25,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2024-11-08 16:04:25,166 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/data/175a6ff9a/d7f69637c8f14724beba85d5bec3bc51/FLAG3f44bb2a8 [2024-11-08 16:04:25,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/data/175a6ff9a/d7f69637c8f14724beba85d5bec3bc51 [2024-11-08 16:04:25,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:04:25,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:04:25,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:25,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:04:25,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:04:25,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:25" (1/1) ... [2024-11-08 16:04:25,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34956406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:25, skipping insertion in model container [2024-11-08 16:04:25,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:04:25" (1/1) ... [2024-11-08 16:04:25,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:04:25,730 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_c8472147-01d2-4c1b-9216-518b9352f3a4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-11-08 16:04:25,740 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_c8472147-01d2-4c1b-9216-518b9352f3a4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-11-08 16:04:26,979 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:26,981 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:26,981 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:26,983 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:26,985 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:27,009 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:27,010 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:27,013 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:27,015 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,258 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,259 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:28,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:04:28,413 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_c8472147-01d2-4c1b-9216-518b9352f3a4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-11-08 16:04:28,414 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_c8472147-01d2-4c1b-9216-518b9352f3a4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-11-08 16:04:28,508 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,509 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,509 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,510 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,511 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,530 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,531 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,532 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,533 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,754 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2024-11-08 16:04:28,756 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,757 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 16:04:28,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:04:29,123 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:04:29,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29 WrapperNode [2024-11-08 16:04:29,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:04:29,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:29,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:04:29,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:04:29,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,363 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 396 [2024-11-08 16:04:29,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:04:29,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:04:29,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:04:29,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:04:29,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,424 INFO L175 MemorySlicer]: Split 279 memory accesses to 4 slices as follows [2, 257, 15, 5]. 92 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 260 writes are split as follows [0, 257, 3, 0]. [2024-11-08 16:04:29,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:04:29,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:04:29,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:04:29,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:04:29,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (1/1) ... [2024-11-08 16:04:29,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:04:29,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:04:29,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:04:29,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:04:29,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-08 16:04:29,599 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-08 16:04:29,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-08 16:04:29,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-08 16:04:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-08 16:04:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-08 16:04:29,602 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-08 16:04:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:04:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 16:04:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 16:04:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-08 16:04:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:04:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:04:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-08 16:04:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-08 16:04:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 16:04:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 16:04:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 16:04:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 16:04:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 16:04:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-08 16:04:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-08 16:04:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-08 16:04:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-08 16:04:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-08 16:04:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:04:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:04:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 16:04:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 16:04:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:04:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:04:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 16:04:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 16:04:30,105 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:04:30,108 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:04:38,432 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-08 16:04:38,434 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:04:38,448 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:04:38,448 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:04:38,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:38 BoogieIcfgContainer [2024-11-08 16:04:38,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:04:38,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:04:38,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:04:38,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:04:38,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:04:25" (1/3) ... [2024-11-08 16:04:38,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b01a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:38, skipping insertion in model container [2024-11-08 16:04:38,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:04:29" (2/3) ... [2024-11-08 16:04:38,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b01a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:04:38, skipping insertion in model container [2024-11-08 16:04:38,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:04:38" (3/3) ... [2024-11-08 16:04:38,459 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2024-11-08 16:04:38,479 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:04:38,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:04:38,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:04:38,563 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;@6ac6e031, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:04:38,563 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:04:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-08 16:04:38,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 16:04:38,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:04:38,581 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:04:38,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:04:38,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:04:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1922818113, now seen corresponding path program 1 times [2024-11-08 16:04:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:04:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600792378] [2024-11-08 16:04:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:04:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:05:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:53,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:05:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:53,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:05:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:53,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 16:05:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:53,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:05:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:05:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:05:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:05:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600792378] [2024-11-08 16:05:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600792378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:05:53,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:05:53,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:05:53,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691203776] [2024-11-08 16:05:53,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:05:53,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:05:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:05:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:05:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:05:54,024 INFO L87 Difference]: Start difference. First operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 16:05:54,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:05:54,082 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2024-11-08 16:05:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:05:54,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-08 16:05:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:05:54,099 INFO L225 Difference]: With dead ends: 205 [2024-11-08 16:05:54,100 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 16:05:54,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:05:54,114 INFO L432 NwaCegarLoop]: 137 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, 137 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 [2024-11-08 16:05:54,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:05:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 16:05:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-08 16:05:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:05:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2024-11-08 16:05:54,198 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 36 [2024-11-08 16:05:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:05:54,202 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2024-11-08 16:05:54,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 16:05:54,203 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2024-11-08 16:05:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 16:05:54,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:05:54,208 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:05:54,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:05:54,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:05:54,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:05:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 233874371, now seen corresponding path program 1 times [2024-11-08 16:05:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:05:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065635417] [2024-11-08 16:05:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:05:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:25,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:07:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:25,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:07:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:25,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 16:07:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:25,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:07:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 16:07:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065635417] [2024-11-08 16:07:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065635417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603755259] [2024-11-08 16:07:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:25,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:25,713 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 16:07:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:25,882 INFO L93 Difference]: Finished difference Result 148 states and 187 transitions. [2024-11-08 16:07:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-11-08 16:07:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:25,885 INFO L225 Difference]: With dead ends: 148 [2024-11-08 16:07:25,885 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 16:07:25,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:25,891 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:25,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 377 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 16:07:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-08 16:07:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:07:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2024-11-08 16:07:25,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 36 [2024-11-08 16:07:25,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:25,920 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2024-11-08 16:07:25,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 16:07:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2024-11-08 16:07:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:07:25,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:25,927 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 16:07:25,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:07:25,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1948800496, now seen corresponding path program 1 times [2024-11-08 16:07:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287113695] [2024-11-08 16:07:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:09:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:09:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:09:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 16:09:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 16:09:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:09:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 16:09:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 16:09:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 16:09:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 16:09:03,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287113695] [2024-11-08 16:09:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287113695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:09:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138057720] [2024-11-08 16:09:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:03,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:09:03,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:09:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:09:03,866 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 16:09:07,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:09:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:13,710 INFO L93 Difference]: Finished difference Result 139 states and 171 transitions. [2024-11-08 16:09:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:09:13,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 64 [2024-11-08 16:09:13,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:13,713 INFO L225 Difference]: With dead ends: 139 [2024-11-08 16:09:13,714 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 16:09:13,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:09:13,716 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:13,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 470 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 466 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2024-11-08 16:09:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 16:09:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-08 16:09:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:09:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2024-11-08 16:09:13,734 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 64 [2024-11-08 16:09:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:13,735 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2024-11-08 16:09:13,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 16:09:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2024-11-08 16:09:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 16:09:13,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:13,739 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 16:09:13,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:09:13,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:13,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2005170135, now seen corresponding path program 1 times [2024-11-08 16:09:13,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388494428] [2024-11-08 16:09:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:13,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:42,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:10:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:42,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 16:10:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:42,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:10:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:42,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 16:10:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 16:10:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:10:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 16:10:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 16:10:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-08 16:10:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 16:10:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388494428] [2024-11-08 16:10:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388494428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:43,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:10:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591125426] [2024-11-08 16:10:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:43,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:10:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:43,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:10:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:10:43,196 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:10:47,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:10:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:50,098 INFO L93 Difference]: Finished difference Result 159 states and 200 transitions. [2024-11-08 16:10:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:10:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2024-11-08 16:10:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:50,102 INFO L225 Difference]: With dead ends: 159 [2024-11-08 16:10:50,102 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 16:10:50,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:10:50,105 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:50,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 244 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 193 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2024-11-08 16:10:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 16:10:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-08 16:10:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:10:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2024-11-08 16:10:50,139 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 65 [2024-11-08 16:10:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:50,142 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2024-11-08 16:10:50,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:10:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2024-11-08 16:10:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 16:10:50,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:50,151 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:50,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:10:50,151 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:50,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1084852449, now seen corresponding path program 1 times [2024-11-08 16:10:50,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165435325] [2024-11-08 16:10:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:18,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:12:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:18,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 16:12:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:19,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:12:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:19,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 16:12:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:12:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:12:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 16:12:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:12:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 16:12:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 16:12:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 16:12:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:12:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 16:12:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 16:12:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 16:12:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-08 16:12:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165435325] [2024-11-08 16:12:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165435325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:20,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:20,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 16:12:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036530302] [2024-11-08 16:12:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:20,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 16:12:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 16:12:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:12:20,910 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-08 16:12:25,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:12:29,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-08 16:12:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:39,784 INFO L93 Difference]: Finished difference Result 138 states and 168 transitions. [2024-11-08 16:12:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 16:12:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 99 [2024-11-08 16:12:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:39,788 INFO L225 Difference]: With dead ends: 138 [2024-11-08 16:12:39,788 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 16:12:39,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:12:39,791 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 97 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 56 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:39,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 546 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 822 Invalid, 2 Unknown, 0 Unchecked, 18.6s Time] [2024-11-08 16:12:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 16:12:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-08 16:12:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:12:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2024-11-08 16:12:39,808 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 99 [2024-11-08 16:12:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:39,809 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2024-11-08 16:12:39,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-08 16:12:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2024-11-08 16:12:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 16:12:39,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:39,813 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:39,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:12:39,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1083418555, now seen corresponding path program 1 times [2024-11-08 16:12:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068672602] [2024-11-08 16:12:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:03,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:14:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:04,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 16:14:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:05,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:14:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:05,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 16:14:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:05,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:14:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:14:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 16:14:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:14:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 16:14:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 16:14:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 16:14:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:14:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 16:14:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 16:14:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 16:14:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:14:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 16:14:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-08 16:14:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-08 16:14:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068672602] [2024-11-08 16:14:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068672602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203212197] [2024-11-08 16:14:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:06,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:06,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:06,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:15:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:28,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:15:28,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 16:15:30,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:15:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203212197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:15:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:15:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2024-11-08 16:15:30,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990768883] [2024-11-08 16:15:30,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:15:30,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:15:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:15:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:15:30,109 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-08 16:15:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:30,556 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-11-08 16:15:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:15:30,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 117 [2024-11-08 16:15:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:30,559 INFO L225 Difference]: With dead ends: 155 [2024-11-08 16:15:30,560 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 16:15:30,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:15:30,562 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:30,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 361 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:15:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 16:15:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-08 16:15:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-08 16:15:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2024-11-08 16:15:30,594 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 117 [2024-11-08 16:15:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:30,595 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2024-11-08 16:15:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-08 16:15:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2024-11-08 16:15:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 16:15:30,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:30,602 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:30,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:15:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:30,803 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:15:30,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash -352371921, now seen corresponding path program 1 times [2024-11-08 16:15:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371481153] [2024-11-08 16:15:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:40,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 16:17:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:41,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 16:17:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:43,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:17:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:43,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 16:17:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:43,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:17:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:17:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 16:17:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:17:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 16:17:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 16:17:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 16:17:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:17:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 16:17:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 16:17:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:47,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 16:17:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:48,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 16:17:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:51,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 16:17:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:51,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 16:17:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:51,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-08 16:17:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-08 16:18:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371481153] [2024-11-08 16:18:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371481153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162897894] [2024-11-08 16:18:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:02,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:02,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:02,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8472147-01d2-4c1b-9216-518b9352f3a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process