./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9b31a0de2b621799e7704a1edbde99c549dd0681127022ee400e76db9f90281d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:26:40,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:26:40,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 07:26:40,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:26:40,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:26:40,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:26:40,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:26:40,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:26:40,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:26:40,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:26:40,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:26:40,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:26:40,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:26:40,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:26:40,634 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:26:40,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:26:40,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:26:40,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:40,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:26:40,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:40,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:26:40,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:26:40,638 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_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b31a0de2b621799e7704a1edbde99c549dd0681127022ee400e76db9f90281d [2024-12-02 07:26:40,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:26:40,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:26:40,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:26:40,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:26:40,860 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:26:40,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2024-12-02 07:26:43,456 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/data/d8edccda6/f8bdaec8c61548b7848f8d554d45d7f7/FLAGc1c01ec78 [2024-12-02 07:26:43,864 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:26:43,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2024-12-02 07:26:43,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/data/d8edccda6/f8bdaec8c61548b7848f8d554d45d7f7/FLAGc1c01ec78 [2024-12-02 07:26:43,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/data/d8edccda6/f8bdaec8c61548b7848f8d554d45d7f7 [2024-12-02 07:26:43,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:26:43,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:26:43,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:26:43,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:26:43,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:26:43,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:43" (1/1) ... [2024-12-02 07:26:43,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233e026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:43, skipping insertion in model container [2024-12-02 07:26:43,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:43" (1/1) ... [2024-12-02 07:26:44,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:26:44,212 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_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2024-12-02 07:26:44,218 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_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2024-12-02 07:26:44,988 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:44,989 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:44,989 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:44,990 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:44,991 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,004 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,004 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,006 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,007 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:26:45,777 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:26:45,790 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_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2024-12-02 07:26:45,790 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_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2024-12-02 07:26:45,826 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,827 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,827 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,827 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,828 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,834 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,835 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,836 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,836 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-12-02 07:26:45,954 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,954 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:26:45,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-12-02 07:26:45,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:26:46,167 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:26:46,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46 WrapperNode [2024-12-02 07:26:46,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:26:46,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:26:46,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:26:46,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:26:46,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,299 INFO L138 Inliner]: procedures = 679, calls = 2610, calls flagged for inlining = 56, calls inlined = 4, statements flattened = 765 [2024-12-02 07:26:46,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:26:46,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:26:46,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:26:46,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:26:46,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,382 INFO L175 MemorySlicer]: Split 530 memory accesses to 5 slices as follows [2, 257, 240, 26, 5]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 4, 5]. The 493 writes are split as follows [0, 257, 232, 4, 0]. [2024-12-02 07:26:46,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:26:46,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:26:46,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:26:46,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:26:46,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (1/1) ... [2024-12-02 07:26:46,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:26:46,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:26:46,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:26:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 07:26:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 07:26:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:26:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 07:26:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:26:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 07:26:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:26:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 07:26:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-12-02 07:26:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:26:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:26:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 07:26:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:26:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:26:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:26:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:26:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:26:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2024-12-02 07:26:46,492 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2024-12-02 07:26:46,737 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:26:46,739 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:26:54,332 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-12-02 07:26:54,332 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:26:54,343 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:26:54,343 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:26:54,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:54 BoogieIcfgContainer [2024-12-02 07:26:54,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:26:54,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:26:54,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:26:54,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:26:54,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:26:43" (1/3) ... [2024-12-02 07:26:54,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d74f087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:54, skipping insertion in model container [2024-12-02 07:26:54,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:46" (2/3) ... [2024-12-02 07:26:54,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d74f087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:54, skipping insertion in model container [2024-12-02 07:26:54,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:54" (3/3) ... [2024-12-02 07:26:54,352 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2024-12-02 07:26:54,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:26:54,367 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_from_array_harness.i that has 8 procedures, 78 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 07:26:54,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:26:54,428 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;@765eb9e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:26:54,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:26:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 07:26:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 07:26:54,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:54,439 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:26:54,439 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:54,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 942573112, now seen corresponding path program 1 times [2024-12-02 07:26:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:54,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836598288] [2024-12-02 07:26:54,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:28:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:28:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:28:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836598288] [2024-12-02 07:28:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836598288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:28:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399752483] [2024-12-02 07:28:26,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:26,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:28:26,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:28:26,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:28:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:29:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:58,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 7490 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:29:58,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:29:58,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:29:58,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399752483] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:58,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:29:58,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:29:58,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969702055] [2024-12-02 07:29:58,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:58,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:29:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:58,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:29:58,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:29:58,400 INFO L87 Difference]: Start difference. First operand has 78 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 07:29:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:58,418 INFO L93 Difference]: Finished difference Result 146 states and 194 transitions. [2024-12-02 07:29:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:29:58,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-12-02 07:29:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:58,426 INFO L225 Difference]: With dead ends: 146 [2024-12-02 07:29:58,426 INFO L226 Difference]: Without dead ends: 71 [2024-12-02 07:29:58,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:29:58,430 INFO L435 NwaCegarLoop]: 95 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, 95 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:58,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-12-02 07:29:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-12-02 07:29:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 48 states have internal predecessors, (55), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 07:29:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2024-12-02 07:29:58,466 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 36 [2024-12-02 07:29:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:58,466 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2024-12-02 07:29:58,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 07:29:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2024-12-02 07:29:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 07:29:58,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:58,468 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:29:58,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:29:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:58,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 72004472, now seen corresponding path program 1 times [2024-12-02 07:29:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830584111] [2024-12-02 07:29:58,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:31:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830584111] [2024-12-02 07:31:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830584111] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:31:24,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:31:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:31:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302747795] [2024-12-02 07:31:24,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:31:24,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:31:24,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:24,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:31:24,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:31:24,843 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 07:31:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:24,994 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-12-02 07:31:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:31:24,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-12-02 07:31:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:24,997 INFO L225 Difference]: With dead ends: 126 [2024-12-02 07:31:24,997 INFO L226 Difference]: Without dead ends: 74 [2024-12-02 07:31:24,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:31:24,999 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:24,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 317 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:31:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-12-02 07:31:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-12-02 07:31:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.163265306122449) internal successors, (57), 51 states have internal predecessors, (57), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-12-02 07:31:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-12-02 07:31:25,009 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 36 [2024-12-02 07:31:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:25,010 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-12-02 07:31:25,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 07:31:25,010 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-12-02 07:31:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 07:31:25,011 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:25,011 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:31:25,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:31:25,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:25,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash 501482117, now seen corresponding path program 1 times [2024-12-02 07:31:25,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:25,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652483894] [2024-12-02 07:31:25,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:25,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:32:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:32:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:32:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:32:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652483894] [2024-12-02 07:32:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652483894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:32:50,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:32:50,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:32:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827836186] [2024-12-02 07:32:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:32:50,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:32:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:32:50,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:32:50,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:32:50,814 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:32:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:32:50,920 INFO L93 Difference]: Finished difference Result 132 states and 162 transitions. [2024-12-02 07:32:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:32:50,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2024-12-02 07:32:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:32:50,922 INFO L225 Difference]: With dead ends: 132 [2024-12-02 07:32:50,922 INFO L226 Difference]: Without dead ends: 77 [2024-12-02 07:32:50,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:32:50,923 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:32:50,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 243 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:32:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-02 07:32:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-12-02 07:32:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 53 states have internal predecessors, (59), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-12-02 07:32:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-12-02 07:32:50,932 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 42 [2024-12-02 07:32:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:32:50,932 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-12-02 07:32:50,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:32:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-12-02 07:32:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 07:32:50,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:32:50,933 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:32:50,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:32:50,933 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:32:50,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:32:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1202546695, now seen corresponding path program 1 times [2024-12-02 07:32:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:32:50,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067269150] [2024-12-02 07:32:50,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:32:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:34:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:34:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:34:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:34:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067269150] [2024-12-02 07:34:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067269150] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:34:15,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:34:15,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:34:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880220816] [2024-12-02 07:34:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:34:15,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:34:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:34:15,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:34:15,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:34:15,854 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:34:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:34:15,957 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2024-12-02 07:34:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:34:15,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2024-12-02 07:34:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:34:15,959 INFO L225 Difference]: With dead ends: 135 [2024-12-02 07:34:15,960 INFO L226 Difference]: Without dead ends: 78 [2024-12-02 07:34:15,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:34:15,961 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:34:15,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:34:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-02 07:34:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-02 07:34:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.150943396226415) internal successors, (61), 55 states have internal predecessors, (61), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-12-02 07:34:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2024-12-02 07:34:15,969 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 42 [2024-12-02 07:34:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:34:15,970 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2024-12-02 07:34:15,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:34:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2024-12-02 07:34:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 07:34:15,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:34:15,971 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:34:15,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:34:15,971 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:34:15,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:34:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1088288131, now seen corresponding path program 1 times [2024-12-02 07:34:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:34:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779507472] [2024-12-02 07:34:15,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:34:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 07:35:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779507472] [2024-12-02 07:35:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779507472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:46,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:46,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:35:46,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093027270] [2024-12-02 07:35:46,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:46,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:35:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:46,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:35:46,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:35:46,343 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:35:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:35:46,731 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-12-02 07:35:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:35:46,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2024-12-02 07:35:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:35:46,733 INFO L225 Difference]: With dead ends: 90 [2024-12-02 07:35:46,733 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 07:35:46,734 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 [2024-12-02 07:35:46,735 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:35:46,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 570 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:35:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 07:35:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-12-02 07:35:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 62 states have internal predecessors, (67), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2024-12-02 07:35:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-12-02 07:35:46,744 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 42 [2024-12-02 07:35:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:35:46,744 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-12-02 07:35:46,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 07:35:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-12-02 07:35:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 07:35:46,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:35:46,746 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:35:46,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:35:46,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:35:46,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1524900017, now seen corresponding path program 1 times [2024-12-02 07:35:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482657198] [2024-12-02 07:35:46,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482657198] [2024-12-02 07:37:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482657198] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774271945] [2024-12-02 07:37:26,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:26,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:26,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1e7e19-0b84-4cc1-8a63-4ad677418b5f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process