./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_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_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a4daa63ade1fb1a2d170a844889a9f0ec321dcf3b8a50088706c45d113683668 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:53:37,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:53:37,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:53:37,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:53:37,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:53:37,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:53:37,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:53:37,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:53:37,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:53:37,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:53:37,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:53:37,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:53:37,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:53:37,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:53:37,816 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:53:37,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:53:37,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:53:37,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:53:37,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:53:37,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:53:37,820 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:53:37,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:37,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:53:37,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:37,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:53:37,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:53:37,823 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_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4daa63ade1fb1a2d170a844889a9f0ec321dcf3b8a50088706c45d113683668 [2024-11-28 03:53:38,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:53:38,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:53:38,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:53:38,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:53:38,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:53:38,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2024-11-28 03:53:41,574 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/data/15c55057c/d96c140b877c4141bf26fbaeeeab7142/FLAG2a6737545 [2024-11-28 03:53:42,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:53:42,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2024-11-28 03:53:42,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/data/15c55057c/d96c140b877c4141bf26fbaeeeab7142/FLAG2a6737545 [2024-11-28 03:53:42,455 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/data/15c55057c/d96c140b877c4141bf26fbaeeeab7142 [2024-11-28 03:53:42,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:53:42,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:53:42,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:42,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:53:42,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:53:42,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:42" (1/1) ... [2024-11-28 03:53:42,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8042d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:42, skipping insertion in model container [2024-11-28 03:53:42,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:42" (1/1) ... [2024-11-28 03:53:42,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:53:43,032 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_bd5548a8-b010-4818-b7cb-40303d136057/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2024-11-28 03:53:43,046 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_bd5548a8-b010-4818-b7cb-40303d136057/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2024-11-28 03:53:44,395 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,396 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,397 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,398 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,400 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,423 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,424 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,427 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:44,428 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,430 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,431 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,608 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,608 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:45,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:53:45,871 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_bd5548a8-b010-4818-b7cb-40303d136057/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4494,4507] [2024-11-28 03:53:45,875 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_bd5548a8-b010-4818-b7cb-40303d136057/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i[4554,4567] [2024-11-28 03:53:45,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,968 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,987 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,989 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:45,989 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:46,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:46,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:46,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8315] [2024-11-28 03:53:46,187 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:46,187 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:53:46,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8801-8812] [2024-11-28 03:53:46,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:46,593 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:53:46,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46 WrapperNode [2024-11-28 03:53:46,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:46,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:46,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:53:46,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:53:46,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,852 INFO L138 Inliner]: procedures = 681, calls = 2619, calls flagged for inlining = 60, calls inlined = 10, statements flattened = 965 [2024-11-28 03:53:46,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:46,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:53:46,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:53:46,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:53:46,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,995 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-28 03:53:46,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:46,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:53:47,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:53:47,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:53:47,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:53:47,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (1/1) ... [2024-11-28 03:53:47,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:53:47,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:47,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:53:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:53:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 03:53:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 03:53:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 03:53:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 03:53:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:53:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:53:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:53:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-11-28 03:53:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-28 03:53:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2024-11-28 03:53:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2024-11-28 03:53:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 03:53:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 03:53:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:53:47,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 03:53:47,219 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 03:53:47,219 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 03:53:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 03:53:47,651 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:53:47,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:53:58,005 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-28 03:53:58,007 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:53:58,027 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:53:58,031 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:53:58,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:58 BoogieIcfgContainer [2024-11-28 03:53:58,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:53:58,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:53:58,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:53:58,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:53:58,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:53:42" (1/3) ... [2024-11-28 03:53:58,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3ab045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:58, skipping insertion in model container [2024-11-28 03:53:58,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:46" (2/3) ... [2024-11-28 03:53:58,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3ab045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:53:58, skipping insertion in model container [2024-11-28 03:53:58,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:58" (3/3) ... [2024-11-28 03:53:58,047 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2024-11-28 03:53:58,066 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:53:58,068 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_reserve_harness.i that has 12 procedures, 153 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:53:58,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:53:58,153 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;@23cb4346, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:53:58,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:53:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 104 states have internal predecessors, (134), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 03:53:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:53:58,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:58,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:58,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:58,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2052675930, now seen corresponding path program 1 times [2024-11-28 03:53:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546785291] [2024-11-28 03:53:58,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:55:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546785291] [2024-11-28 03:55:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546785291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:55:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571948761] [2024-11-28 03:55:40,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:40,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:55:40,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:40,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:55:40,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:57:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:13,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 7522 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:57:13,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:57:13,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:57:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571948761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:57:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:57:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941616010] [2024-11-28 03:57:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:13,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:57:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:13,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:57:13,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:57:13,563 INFO L87 Difference]: Start difference. First operand has 153 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 104 states have internal predecessors, (134), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:57:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:13,619 INFO L93 Difference]: Finished difference Result 296 states and 422 transitions. [2024-11-28 03:57:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:57:13,621 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-28 03:57:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:13,633 INFO L225 Difference]: With dead ends: 296 [2024-11-28 03:57:13,633 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 03:57:13,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:57:13,644 INFO L435 NwaCegarLoop]: 202 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, 202 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:13,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:57:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 03:57:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-28 03:57:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 98 states have internal predecessors, (120), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 03:57:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 193 transitions. [2024-11-28 03:57:13,708 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 193 transitions. Word has length 48 [2024-11-28 03:57:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:13,709 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 193 transitions. [2024-11-28 03:57:13,709 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:57:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 193 transitions. [2024-11-28 03:57:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:57:13,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:13,712 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, 1, 1, 1, 1] [2024-11-28 03:57:13,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:57:13,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:13,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:13,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash -371246907, now seen corresponding path program 1 times [2024-11-28 03:57:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:13,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881550241] [2024-11-28 03:57:13,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:13,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:58:50,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:50,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881550241] [2024-11-28 03:58:50,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881550241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:50,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:50,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:58:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559279901] [2024-11-28 03:58:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:50,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:58:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:50,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:58:50,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:50,022 INFO L87 Difference]: Start difference. First operand 146 states and 193 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:50,624 INFO L93 Difference]: Finished difference Result 279 states and 373 transitions. [2024-11-28 03:58:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:50,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2024-11-28 03:58:50,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:50,629 INFO L225 Difference]: With dead ends: 279 [2024-11-28 03:58:50,629 INFO L226 Difference]: Without dead ends: 149 [2024-11-28 03:58:50,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:50,631 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 17 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:50,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 673 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:58:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-28 03:58:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-28 03:58:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2024-11-28 03:58:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2024-11-28 03:58:50,650 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 50 [2024-11-28 03:58:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:50,650 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2024-11-28 03:58:50,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 03:58:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2024-11-28 03:58:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:58:50,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:50,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:50,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:58:50,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:50,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash 140776400, now seen corresponding path program 1 times [2024-11-28 03:58:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809147107] [2024-11-28 03:58:50,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:00:26,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:26,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809147107] [2024-11-28 04:00:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809147107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:26,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:00:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391412063] [2024-11-28 04:00:26,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:26,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:00:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:26,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:00:26,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:26,777 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:00:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:26,975 INFO L93 Difference]: Finished difference Result 211 states and 273 transitions. [2024-11-28 04:00:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:00:26,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2024-11-28 04:00:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:26,980 INFO L225 Difference]: With dead ends: 211 [2024-11-28 04:00:26,981 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 04:00:26,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:26,982 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:26,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 941 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:00:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 04:00:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-28 04:00:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 37 states have call predecessors, (41), 36 states have call successors, (41) [2024-11-28 04:00:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 203 transitions. [2024-11-28 04:00:27,002 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 203 transitions. Word has length 56 [2024-11-28 04:00:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:27,003 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 203 transitions. [2024-11-28 04:00:27,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 04:00:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 203 transitions. [2024-11-28 04:00:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:00:27,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:27,006 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 04:00:27,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:00:27,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:27,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1037358961, now seen corresponding path program 1 times [2024-11-28 04:00:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706680132] [2024-11-28 04:00:27,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:02:02,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706680132] [2024-11-28 04:02:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706680132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435150517] [2024-11-28 04:02:02,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:02,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:02,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:02,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:02,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:39,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 7562 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:03:39,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:03:40,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435150517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:40,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:40,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:03:40,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134340194] [2024-11-28 04:03:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:40,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:03:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:40,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:03:40,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:03:40,606 INFO L87 Difference]: Start difference. First operand 153 states and 203 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 04:03:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:42,868 INFO L93 Difference]: Finished difference Result 280 states and 370 transitions. [2024-11-28 04:03:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:03:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2024-11-28 04:03:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:42,871 INFO L225 Difference]: With dead ends: 280 [2024-11-28 04:03:42,871 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 04:03:42,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:03:42,873 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 237 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:42,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 779 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:03:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 04:03:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-28 04:03:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 100 states have (on average 1.22) internal successors, (122), 101 states have internal predecessors, (122), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2024-11-28 04:03:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 196 transitions. [2024-11-28 04:03:42,889 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 196 transitions. Word has length 63 [2024-11-28 04:03:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:42,890 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 196 transitions. [2024-11-28 04:03:42,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 04:03:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 196 transitions. [2024-11-28 04:03:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:03:42,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:42,893 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:42,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:03:43,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5548a8-b010-4818-b7cb-40303d136057/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:43,094 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:43,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash 139135886, now seen corresponding path program 1 times [2024-11-28 04:03:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:43,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484571319] [2024-11-28 04:03:43,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:05:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484571319] [2024-11-28 04:05:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484571319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:05:22,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:05:22,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926760684] [2024-11-28 04:05:22,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:22,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:05:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:22,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:05:22,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:05:22,613 INFO L87 Difference]: Start difference. First operand 150 states and 196 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:05:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:23,043 INFO L93 Difference]: Finished difference Result 162 states and 213 transitions. [2024-11-28 04:05:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:05:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2024-11-28 04:05:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:23,046 INFO L225 Difference]: With dead ends: 162 [2024-11-28 04:05:23,046 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 04:05:23,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:05:23,048 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 3 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:23,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1292 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:05:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 04:05:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2024-11-28 04:05:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-28 04:05:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2024-11-28 04:05:23,067 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 68 [2024-11-28 04:05:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:23,071 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2024-11-28 04:05:23,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:05:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2024-11-28 04:05:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:05:23,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:23,074 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:23,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:05:23,074 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2061343275, now seen corresponding path program 1 times [2024-11-28 04:05:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133569305] [2024-11-28 04:05:23,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:06:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133569305] [2024-11-28 04:06:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133569305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:06:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986119145] [2024-11-28 04:06:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:52,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:06:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:52,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:06:52,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:06:52,258 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:06:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:52,467 INFO L93 Difference]: Finished difference Result 231 states and 294 transitions. [2024-11-28 04:06:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:06:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2024-11-28 04:06:52,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:52,471 INFO L225 Difference]: With dead ends: 231 [2024-11-28 04:06:52,472 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 04:06:52,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:06:52,473 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:52,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 952 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:06:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 04:06:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2024-11-28 04:06:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-28 04:06:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2024-11-28 04:06:52,499 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 70 [2024-11-28 04:06:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:52,500 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2024-11-28 04:06:52,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:06:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2024-11-28 04:06:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:06:52,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:52,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:52,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:06:52,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:52,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -333452074, now seen corresponding path program 1 times [2024-11-28 04:06:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830071172] [2024-11-28 04:06:52,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:08:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830071172] [2024-11-28 04:08:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830071172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:08:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:08:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:08:25,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995279823] [2024-11-28 04:08:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:08:25,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:08:25,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:25,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:08:25,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:08:25,682 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:08:29,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:34,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 04:08:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:35,779 INFO L93 Difference]: Finished difference Result 321 states and 440 transitions. [2024-11-28 04:08:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:08:35,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2024-11-28 04:08:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:35,783 INFO L225 Difference]: With dead ends: 321 [2024-11-28 04:08:35,783 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 04:08:35,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:08:35,785 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 15 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:35,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 689 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2024-11-28 04:08:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 04:08:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2024-11-28 04:08:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-28 04:08:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2024-11-28 04:08:35,812 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 72 [2024-11-28 04:08:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:35,814 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2024-11-28 04:08:35,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:08:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2024-11-28 04:08:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:08:35,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:35,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:35,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:08:35,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:35,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash -75286636, now seen corresponding path program 1 times [2024-11-28 04:08:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832868053] [2024-11-28 04:08:35,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms