./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:06:45,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:06:45,379 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 08:06:45,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:06:45,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:06:45,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:06:45,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:06:45,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:06:45,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:06:45,407 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:06:45,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:06:45,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:06:45,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:06:45,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:06:45,408 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:06:45,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:06:45,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:06:45,409 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:06:45,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:06:45,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:06:45,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:06:45,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:06:45,412 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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/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 -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2024-12-02 08:06:45,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:06:45,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:06:45,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:06:45,652 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:06:45,652 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:06:45,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2024-12-02 08:06:48,425 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/data/1610cea35/9de5611a671a4652a5bb319fa1263349/FLAG71d1533be [2024-12-02 08:06:48,821 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:06:48,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2024-12-02 08:06:48,852 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/data/1610cea35/9de5611a671a4652a5bb319fa1263349/FLAG71d1533be [2024-12-02 08:06:48,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/data/1610cea35/9de5611a671a4652a5bb319fa1263349 [2024-12-02 08:06:48,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:06:48,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:06:48,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:06:48,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:06:48,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:06:48,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:06:48" (1/1) ... [2024-12-02 08:06:48,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126d4984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:48, skipping insertion in model container [2024-12-02 08:06:48,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:06:48" (1/1) ... [2024-12-02 08:06:48,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:06:49,221 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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2024-12-02 08:06:49,228 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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2024-12-02 08:06:50,126 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,142 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,142 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,144 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,145 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,942 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:50,943 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:06:51,062 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:06:51,078 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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2024-12-02 08:06:51,079 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_2728f837-e36d-4bb3-bf2a-481d45c68b6f/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2024-12-02 08:06:51,123 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,123 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,123 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,132 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,133 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,263 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-12-02 08:06:51,265 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,265 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 08:06:51,310 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-12-02 08:06:51,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:06:51,501 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:06:51,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51 WrapperNode [2024-12-02 08:06:51,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:06:51,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:06:51,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:06:51,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:06:51,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,633 INFO L138 Inliner]: procedures = 680, calls = 2609, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 802 [2024-12-02 08:06:51,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:06:51,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:06:51,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:06:51,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:06:51,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,703 INFO L175 MemorySlicer]: Split 516 memory accesses to 6 slices as follows [2, 257, 8, 238, 6, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 0, 6, 0, 5]. The 491 writes are split as follows [0, 257, 0, 232, 2, 0]. [2024-12-02 08:06:51,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:06:51,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:06:51,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:06:51,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:06:51,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (1/1) ... [2024-12-02 08:06:51,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:06:51,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:06:51,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:06:51,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:06:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-12-02 08:06:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-12-02 08:06:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 08:06:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 08:06:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 08:06:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-12-02 08:06:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:06:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:06:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 08:06:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 08:06:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 08:06:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 08:06:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 08:06:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 08:06:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 08:06:51,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-12-02 08:06:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:06:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 08:06:51,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 08:06:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:06:51,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 08:06:51,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 08:06:52,064 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:06:52,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:06:59,728 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-12-02 08:06:59,728 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:06:59,738 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:06:59,738 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:06:59,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:06:59 BoogieIcfgContainer [2024-12-02 08:06:59,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:06:59,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:06:59,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:06:59,745 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:06:59,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:06:48" (1/3) ... [2024-12-02 08:06:59,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461d60de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:06:59, skipping insertion in model container [2024-12-02 08:06:59,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:06:51" (2/3) ... [2024-12-02 08:06:59,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461d60de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:06:59, skipping insertion in model container [2024-12-02 08:06:59,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:06:59" (3/3) ... [2024-12-02 08:06:59,747 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness.i [2024-12-02 08:06:59,761 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:06:59,763 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_eq_c_str_harness.i that has 10 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:06:59,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:06:59,823 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;@7146e47d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:06:59,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:06:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 08:06:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:06:59,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:06:59,835 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 08:06:59,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:06:59,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash 511260694, now seen corresponding path program 1 times [2024-12-02 08:06:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698059452] [2024-12-02 08:06:59,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:06:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:08:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:08:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 08:08:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:08:30,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698059452] [2024-12-02 08:08:30,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698059452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:08:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952761748] [2024-12-02 08:08:30,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:08:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:08:30,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:08:30,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:10:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:10:02,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:10:02,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:10:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 08:10:02,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:10:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952761748] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:10:02,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:10:02,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:10:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099493011] [2024-12-02 08:10:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:10:02,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:10:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:10:02,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:10:02,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:10:02,524 INFO L87 Difference]: Start difference. First operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:10:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:10:02,549 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2024-12-02 08:10:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:10:02,550 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2024-12-02 08:10:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:10:02,557 INFO L225 Difference]: With dead ends: 189 [2024-12-02 08:10:02,557 INFO L226 Difference]: Without dead ends: 91 [2024-12-02 08:10:02,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 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 08:10:02,563 INFO L435 NwaCegarLoop]: 124 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, 124 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 08:10:02,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:10:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-12-02 08:10:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-12-02 08:10:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 57 states have internal predecessors, (67), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 08:10:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2024-12-02 08:10:02,593 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 67 [2024-12-02 08:10:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:10:02,593 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2024-12-02 08:10:02,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:10:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2024-12-02 08:10:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:10:02,596 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:10:02,596 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 08:10:02,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:10:02,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 08:10:02,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:10:02,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:10:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2109288692, now seen corresponding path program 1 times [2024-12-02 08:10:02,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:10:02,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511376199] [2024-12-02 08:10:02,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:10:02,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:11:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:11:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 08:11:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:11:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511376199] [2024-12-02 08:11:34,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511376199] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:11:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064808909] [2024-12-02 08:11:34,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:11:34,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:11:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:11:34,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:11:34,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:13:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:13:00,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 08:13:00,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:13:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 08:13:01,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:13:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064808909] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:13:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:13:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 9 [2024-12-02 08:13:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388587542] [2024-12-02 08:13:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:13:01,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:13:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:13:01,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:13:01,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:13:01,339 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 08:13:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:13:02,270 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2024-12-02 08:13:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:13:02,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2024-12-02 08:13:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:13:02,272 INFO L225 Difference]: With dead ends: 144 [2024-12-02 08:13:02,273 INFO L226 Difference]: Without dead ends: 91 [2024-12-02 08:13:02,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:13:02,274 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 6 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:13:02,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 680 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 08:13:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-12-02 08:13:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-12-02 08:13:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2) internal successors, (66), 57 states have internal predecessors, (66), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 08:13:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2024-12-02 08:13:02,286 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 67 [2024-12-02 08:13:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:13:02,287 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2024-12-02 08:13:02,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 08:13:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2024-12-02 08:13:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 08:13:02,290 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:13:02,290 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:13:02,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 08:13:02,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2728f837-e36d-4bb3-bf2a-481d45c68b6f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:13:02,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:13:02,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:13:02,491 INFO L85 PathProgramCache]: Analyzing trace with hash 890501595, now seen corresponding path program 1 times [2024-12-02 08:13:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:13:02,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803816330] [2024-12-02 08:13:02,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:13:02,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:14:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:14:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 08:14:39,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:14:39,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803816330] [2024-12-02 08:14:39,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803816330] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:14:39,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:14:39,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 08:14:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988362623] [2024-12-02 08:14:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:14:39,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:14:39,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:14:39,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:14:39,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:14:39,564 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-12-02 08:14:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:14:43,100 INFO L93 Difference]: Finished difference Result 142 states and 196 transitions. [2024-12-02 08:14:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 08:14:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 95 [2024-12-02 08:14:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:14:43,105 INFO L225 Difference]: With dead ends: 142 [2024-12-02 08:14:43,105 INFO L226 Difference]: Without dead ends: 140 [2024-12-02 08:14:43,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-12-02 08:14:43,106 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 91 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:14:43,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1600 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 08:14:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-12-02 08:14:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 106. [2024-12-02 08:14:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 67 states have internal predecessors, (76), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (33), 29 states have call predecessors, (33), 29 states have call successors, (33) [2024-12-02 08:14:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-12-02 08:14:43,127 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 95 [2024-12-02 08:14:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:14:43,127 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-12-02 08:14:43,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-12-02 08:14:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-12-02 08:14:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:14:43,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:14:43,130 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:14:43,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:14:43,131 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:14:43,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:14:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -447727567, now seen corresponding path program 1 times [2024-12-02 08:14:43,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:14:43,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804412270] [2024-12-02 08:14:43,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:14:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:19:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:19:43,827 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.