./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC --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 8ccdea72ddab462e9567b7f56695cddd8d47da872c9a3d4b09c71a162ef49999 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:58:24,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:58:24,446 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:58:24,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:58:24,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:58:24,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:58:24,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:58:24,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:58:24,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:58:24,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:58:24,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:58:24,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:58:24,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:58:24,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:58:24,491 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:58:24,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:58:24,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:58:24,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:58:24,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:58:24,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:58:24,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:58:24,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:58:24,493 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:58:24,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:58:24,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:58:24,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:58:24,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:58:24,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:58:24,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:58:24,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:58:24,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:58:24,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:58:24,495 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:58:24,496 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC 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 -> 8ccdea72ddab462e9567b7f56695cddd8d47da872c9a3d4b09c71a162ef49999 [2024-11-24 00:58:24,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:58:24,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:58:24,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:58:24,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:58:24,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:58:24,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2024-11-24 00:58:27,788 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/data/5414b13b0/27c60c0ccad444ab95a9e2134ce64d93/FLAG55e0c133e [2024-11-24 00:58:28,530 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:58:28,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2024-11-24 00:58:28,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/data/5414b13b0/27c60c0ccad444ab95a9e2134ce64d93/FLAG55e0c133e [2024-11-24 00:58:28,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/data/5414b13b0/27c60c0ccad444ab95a9e2134ce64d93 [2024-11-24 00:58:28,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:58:28,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:58:28,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:58:28,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:58:28,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:58:28,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:58:28" (1/1) ... [2024-11-24 00:58:28,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215b953d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:28, skipping insertion in model container [2024-11-24 00:58:28,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:58:28" (1/1) ... [2024-11-24 00:58:28,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:58:29,004 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_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2024-11-24 00:58:29,012 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_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2024-11-24 00:58:30,016 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,017 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,018 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,019 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,020 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,038 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,918 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,919 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:30,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:58:31,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:58:31,097 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_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2024-11-24 00:58:31,098 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_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2024-11-24 00:58:31,163 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,163 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,164 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,164 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,165 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,177 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,177 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-24 00:58:31,340 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,341 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:58:31,357 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-24 00:58:31,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:58:31,719 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:58:31,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31 WrapperNode [2024-11-24 00:58:31,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:58:31,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:58:31,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:58:31,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:58:31,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:31,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:31,921 INFO L138 Inliner]: procedures = 680, calls = 2647, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 835 [2024-11-24 00:58:31,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:58:31,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:58:31,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:58:31,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:58:31,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:31,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:31,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,050 INFO L175 MemorySlicer]: Split 548 memory accesses to 8 slices as follows [2, 34, 257, 238, 4, 6, 5, 2]. 47 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 4, 0, 6, 0, 0, 5, 0]. The 494 writes are split as follows [0, 3, 257, 232, 0, 2, 0, 0]. [2024-11-24 00:58:32,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,115 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:58:32,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:58:32,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:58:32,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:58:32,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (1/1) ... [2024-11-24 00:58:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:58:32,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:58:32,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:58:32,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:58:32,252 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-24 00:58:32,253 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-24 00:58:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:58:32,253 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 00:58:32,253 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 00:58:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:58:32,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:58:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:58:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:58:32,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:58:32,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:58:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:58:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:58:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2024-11-24 00:58:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2024-11-24 00:58:32,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:58:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-24 00:58:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:58:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:58:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:58:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 00:58:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 00:58:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:58:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:58:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-24 00:58:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:58:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 00:58:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 00:58:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:58:32,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:58:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 00:58:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2024-11-24 00:58:32,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2024-11-24 00:58:32,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:58:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:58:32,659 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:58:32,661 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:58:41,941 INFO L? ?]: Removed 78 outVars from TransFormulas that were not future-live. [2024-11-24 00:58:41,941 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:58:41,957 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:58:41,957 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:58:41,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:58:41 BoogieIcfgContainer [2024-11-24 00:58:41,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:58:41,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:58:41,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:58:41,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:58:41,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:58:28" (1/3) ... [2024-11-24 00:58:41,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e6eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:58:41, skipping insertion in model container [2024-11-24 00:58:41,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:58:31" (2/3) ... [2024-11-24 00:58:41,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5e6eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:58:41, skipping insertion in model container [2024-11-24 00:58:41,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:58:41" (3/3) ... [2024-11-24 00:58:41,973 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2024-11-24 00:58:41,990 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:58:41,993 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_cursor_compare_lookup_harness.i that has 11 procedures, 134 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:58:42,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:58:42,089 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;@dab7c77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:58:42,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:58:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 82 states have internal predecessors, (102), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-24 00:58:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-24 00:58:42,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:58:42,114 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2024-11-24 00:58:42,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:58:42,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:58:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1455745362, now seen corresponding path program 1 times [2024-11-24 00:58:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:58:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343951870] [2024-11-24 00:58:42,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 01:00:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343951870] [2024-11-24 01:00:10,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343951870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:10,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752291222] [2024-11-24 01:00:10,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:10,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:10,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:10,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:10,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:01:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:43,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 7742 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:01:43,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-24 01:01:44,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:01:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752291222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:01:44,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:01:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 01:01:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6088398] [2024-11-24 01:01:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:01:44,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:01:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:01:44,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:01:44,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:01:44,481 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 82 states have internal predecessors, (102), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 01:01:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:45,729 INFO L93 Difference]: Finished difference Result 267 states and 401 transitions. [2024-11-24 01:01:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:01:45,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 95 [2024-11-24 01:01:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:45,738 INFO L225 Difference]: With dead ends: 267 [2024-11-24 01:01:45,738 INFO L226 Difference]: Without dead ends: 131 [2024-11-24 01:01:45,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:01:45,745 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 182 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:45,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 391 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:01:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-24 01:01:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-24 01:01:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 80 states have internal predecessors, (95), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2024-11-24 01:01:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2024-11-24 01:01:45,794 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 95 [2024-11-24 01:01:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:45,795 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2024-11-24 01:01:45,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 01:01:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2024-11-24 01:01:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-24 01:01:45,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:45,801 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 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] [2024-11-24 01:01:45,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:01:46,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:01:46,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:01:46,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1747697111, now seen corresponding path program 1 times [2024-11-24 01:01:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:01:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419204330] [2024-11-24 01:01:46,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:03:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:03:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 01:03:30,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:03:30,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419204330] [2024-11-24 01:03:30,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419204330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:03:30,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633136872] [2024-11-24 01:03:30,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:03:30,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:03:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:03:30,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:03:30,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:05:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:05:08,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 7747 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:05:08,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:05:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:05:09,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:05:09,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633136872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:05:09,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:05:09,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:05:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34610158] [2024-11-24 01:05:09,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:05:09,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:05:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:05:09,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:05:09,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:05:09,470 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:05:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:05:11,587 INFO L93 Difference]: Finished difference Result 212 states and 303 transitions. [2024-11-24 01:05:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:05:11,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2024-11-24 01:05:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:05:11,590 INFO L225 Difference]: With dead ends: 212 [2024-11-24 01:05:11,594 INFO L226 Difference]: Without dead ends: 131 [2024-11-24 01:05:11,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:05:11,599 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 192 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:05:11,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 568 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 01:05:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-24 01:05:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-24 01:05:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 80 states have internal predecessors, (95), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (45), 40 states have call predecessors, (45), 40 states have call successors, (45) [2024-11-24 01:05:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 181 transitions. [2024-11-24 01:05:11,622 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 181 transitions. Word has length 97 [2024-11-24 01:05:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:05:11,625 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 181 transitions. [2024-11-24 01:05:11,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:05:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 181 transitions. [2024-11-24 01:05:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:05:11,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:05:11,633 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2024-11-24 01:05:11,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:05:11,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:05:11,834 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:05:11,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:05:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 720707785, now seen corresponding path program 2 times [2024-11-24 01:05:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:05:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954284442] [2024-11-24 01:05:11,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:05:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:38,683 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 01:06:38,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:06:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-24 01:06:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954284442] [2024-11-24 01:06:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954284442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:44,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:44,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:06:44,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018768375] [2024-11-24 01:06:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:44,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:06:44,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:44,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:06:44,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:06:44,540 INFO L87 Difference]: Start difference. First operand 131 states and 181 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:06:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:06:45,034 INFO L93 Difference]: Finished difference Result 143 states and 202 transitions. [2024-11-24 01:06:45,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:06:45,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2024-11-24 01:06:45,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:06:45,037 INFO L225 Difference]: With dead ends: 143 [2024-11-24 01:06:45,037 INFO L226 Difference]: Without dead ends: 141 [2024-11-24 01:06:45,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:06:45,039 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 3 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:06:45,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1228 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:06:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-24 01:06:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2024-11-24 01:06:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 87 states have internal predecessors, (101), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (56), 41 states have call predecessors, (56), 41 states have call successors, (56) [2024-11-24 01:06:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2024-11-24 01:06:45,067 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 101 [2024-11-24 01:06:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:06:45,068 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2024-11-24 01:06:45,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:06:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2024-11-24 01:06:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:06:45,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:06:45,070 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2024-11-24 01:06:45,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:06:45,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:06:45,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1988926838, now seen corresponding path program 1 times [2024-11-24 01:06:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606749521] [2024-11-24 01:06:45,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:08:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:08:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-24 01:08:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:08:15,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606749521] [2024-11-24 01:08:15,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606749521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:08:15,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787575210] [2024-11-24 01:08:15,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:08:15,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:08:15,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:08:15,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:08:15,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:09:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:09:46,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 7766 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:09:46,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:09:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:09:47,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:09:47,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787575210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:09:47,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:09:47,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:09:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059477028] [2024-11-24 01:09:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:09:47,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:09:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:09:47,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:09:47,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:09:47,059 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:09:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:09:49,463 INFO L93 Difference]: Finished difference Result 275 states and 407 transitions. [2024-11-24 01:09:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:09:49,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 102 [2024-11-24 01:09:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:09:49,467 INFO L225 Difference]: With dead ends: 275 [2024-11-24 01:09:49,467 INFO L226 Difference]: Without dead ends: 170 [2024-11-24 01:09:49,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:09:49,470 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 238 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:09:49,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 741 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 01:09:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-24 01:09:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-24 01:09:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 102 states have internal predecessors, (121), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (74), 55 states have call predecessors, (74), 55 states have call successors, (74) [2024-11-24 01:09:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 251 transitions. [2024-11-24 01:09:49,496 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 251 transitions. Word has length 102 [2024-11-24 01:09:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:09:49,496 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 251 transitions. [2024-11-24 01:09:49,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 01:09:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 251 transitions. [2024-11-24 01:09:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:09:49,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:09:49,499 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 01:09:49,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:09:49,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:09:49,700 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:09:49,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:09:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash 60754779, now seen corresponding path program 1 times [2024-11-24 01:09:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:09:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732318880] [2024-11-24 01:09:49,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:09:49,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-24 01:11:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732318880] [2024-11-24 01:11:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732318880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:31,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:11:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24600854] [2024-11-24 01:11:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:31,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:11:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:31,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:11:31,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:11:31,429 INFO L87 Difference]: Start difference. First operand 170 states and 251 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:11:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:32,108 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2024-11-24 01:11:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:11:32,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 104 [2024-11-24 01:11:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:32,116 INFO L225 Difference]: With dead ends: 180 [2024-11-24 01:11:32,116 INFO L226 Difference]: Without dead ends: 178 [2024-11-24 01:11:32,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:11:32,117 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 3 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:32,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1193 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:11:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-24 01:11:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2024-11-24 01:11:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 105 states have internal predecessors, (124), 58 states have call successors, (58), 13 states have call predecessors, (58), 15 states have return successors, (76), 57 states have call predecessors, (76), 57 states have call successors, (76) [2024-11-24 01:11:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 258 transitions. [2024-11-24 01:11:32,171 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 258 transitions. Word has length 104 [2024-11-24 01:11:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 258 transitions. [2024-11-24 01:11:32,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 01:11:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 258 transitions. [2024-11-24 01:11:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 01:11:32,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:32,175 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 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] [2024-11-24 01:11:32,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:11:32,176 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:32,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1376327436, now seen corresponding path program 1 times [2024-11-24 01:11:32,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321193520] [2024-11-24 01:11:32,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:13:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:13:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-24 01:13:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:13:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321193520] [2024-11-24 01:13:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321193520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:13:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816497488] [2024-11-24 01:13:25,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:13:25,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:13:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:13:25,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:13:25,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab84c9c-105d-42bd-b2e8-8d01d9e1a6f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process