./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/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 d3a7269104a5fa29492f85d3133520b9ee0197d3c9634a051510bddf9cb69b6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:25:46,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:25:46,282 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:25:46,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:25:46,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:25:46,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:25:46,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:25:46,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:25:46,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:25:46,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:25:46,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:25:46,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:25:46,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:25:46,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:25:46,311 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:25:46,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:25:46,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:25:46,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:25:46,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:25:46,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:25:46,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:25:46,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:25:46,314 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/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 -> d3a7269104a5fa29492f85d3133520b9ee0197d3c9634a051510bddf9cb69b6d [2024-12-02 10:25:46,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:25:46,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:25:46,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:25:46,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:25:46,561 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:25:46,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i [2024-12-02 10:25:49,151 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/data/fca1f3184/7744c2e9683f498a9d431b468a4c8327/FLAGa0b0b2a8b [2024-12-02 10:25:49,538 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:25:49,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i [2024-12-02 10:25:49,559 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/data/fca1f3184/7744c2e9683f498a9d431b468a4c8327/FLAGa0b0b2a8b [2024-12-02 10:25:49,710 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/data/fca1f3184/7744c2e9683f498a9d431b468a4c8327 [2024-12-02 10:25:49,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:25:49,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:25:49,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:25:49,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:25:49,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:25:49,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:25:49" (1/1) ... [2024-12-02 10:25:49,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b1f475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:49, skipping insertion in model container [2024-12-02 10:25:49,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:25:49" (1/1) ... [2024-12-02 10:25:49,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:25:49,960 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2024-12-02 10:25:49,966 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2024-12-02 10:25:50,505 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,506 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,506 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,507 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,508 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,522 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,527 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:50,954 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156332,156345] [2024-12-02 10:25:50,955 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156551,156564] [2024-12-02 10:25:50,955 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156747,156760] [2024-12-02 10:25:50,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:25:50,976 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:25:50,987 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4494,4507] [2024-12-02 10:25:50,987 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[4554,4567] [2024-12-02 10:25:51,050 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,050 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,050 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,059 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:25:51,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [6947-6958] [2024-12-02 10:25:51,131 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156332,156345] [2024-12-02 10:25:51,132 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156551,156564] [2024-12-02 10:25:51,132 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_7ce3da4c-058d-464f-9f8a-610b190a6c6c/sv-benchmarks/c/aws-c-common/aws_mul_size_checked_harness.i[156747,156760] [2024-12-02 10:25:51,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:25:51,325 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:25:51,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51 WrapperNode [2024-12-02 10:25:51,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:25:51,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:25:51,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:25:51,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:25:51,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,409 INFO L138 Inliner]: procedures = 671, calls = 1227, calls flagged for inlining = 42, calls inlined = 6, statements flattened = 524 [2024-12-02 10:25:51,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:25:51,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:25:51,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:25:51,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:25:51,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,479 INFO L175 MemorySlicer]: Split 246 memory accesses to 4 slices as follows [2, 3, 3, 238]. 97 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 1, 1, 6]. The 234 writes are split as follows [0, 1, 1, 232]. [2024-12-02 10:25:51,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:25:51,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:25:51,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:25:51,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:25:51,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (1/1) ... [2024-12-02 10:25:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:25:51,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:51,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:25:51,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_u64_checked [2024-12-02 10:25:51,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_u64_checked [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 10:25:51,570 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 10:25:51,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 10:25:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 10:25:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:25:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 10:25:51,571 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint32_t [2024-12-02 10:25:51,571 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint32_t [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 10:25:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 10:25:51,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:25:51,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:25:51,769 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:25:51,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:25:57,320 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-12-02 10:25:57,320 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:25:57,328 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:25:57,329 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 10:25:57,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:25:57 BoogieIcfgContainer [2024-12-02 10:25:57,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:25:57,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:25:57,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:25:57,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:25:57,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:25:49" (1/3) ... [2024-12-02 10:25:57,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54550c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:25:57, skipping insertion in model container [2024-12-02 10:25:57,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:25:51" (2/3) ... [2024-12-02 10:25:57,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54550c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:25:57, skipping insertion in model container [2024-12-02 10:25:57,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:25:57" (3/3) ... [2024-12-02 10:25:57,337 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_mul_size_checked_harness.i [2024-12-02 10:25:57,348 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:25:57,350 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_mul_size_checked_harness.i that has 8 procedures, 65 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 10:25:57,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:25:57,403 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;@4ed4f828, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:25:57,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:25:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-12-02 10:25:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 10:25:57,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:25:57,413 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:57,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:25:57,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash -262868855, now seen corresponding path program 1 times [2024-12-02 10:25:57,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:57,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526433362] [2024-12-02 10:25:57,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:26:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024185427] [2024-12-02 10:26:02,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:02,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:02,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:02,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:02,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:30:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:54,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 3811 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 10:30:54,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:56,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 10:30:56,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-02 10:30:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:30:57,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:30:57,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:30:57,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526433362] [2024-12-02 10:30:57,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:30:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024185427] [2024-12-02 10:30:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024185427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:30:57,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:30:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 10:30:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184943750] [2024-12-02 10:30:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:30:57,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:30:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:30:57,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:30:57,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:30:57,118 INFO L87 Difference]: Start difference. First operand has 65 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 10:30:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:30:58,525 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2024-12-02 10:30:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:30:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-12-02 10:30:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:30:58,532 INFO L225 Difference]: With dead ends: 89 [2024-12-02 10:30:58,532 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 10:30:58,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:30:58,536 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 7 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:30:58,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 626 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 10:30:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 10:30:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-12-02 10:30:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 39 states have internal predecessors, (41), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2024-12-02 10:30:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-12-02 10:30:58,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 33 [2024-12-02 10:30:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:30:58,566 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-12-02 10:30:58,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 10:30:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-12-02 10:30:58,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 10:30:58,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:30:58,567 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:30:58,768 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2024-12-02 10:30:58,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 10:30:58,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 10:30:58,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:30:58,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:58,803 INFO L85 PathProgramCache]: Analyzing trace with hash -259115189, now seen corresponding path program 1 times [2024-12-02 10:30:58,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:30:58,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698413212] [2024-12-02 10:30:58,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:58,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:31:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:31:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:31:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:31:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698413212] [2024-12-02 10:31:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698413212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:04,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:04,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:31:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052588930] [2024-12-02 10:31:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:04,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:31:04,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:31:04,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:31:04,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:31:04,341 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 10:31:04,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:31:04,394 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-12-02 10:31:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:31:04,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2024-12-02 10:31:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:31:04,396 INFO L225 Difference]: With dead ends: 64 [2024-12-02 10:31:04,396 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 10:31:04,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:31:04,397 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:31:04,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:31:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 10:31:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-12-02 10:31:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:31:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-12-02 10:31:04,403 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 33 [2024-12-02 10:31:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:31:04,404 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-12-02 10:31:04,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 10:31:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-12-02 10:31:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 10:31:04,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:31:04,405 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 10:31:04,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:31:04,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:31:04,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1576305654, now seen corresponding path program 1 times [2024-12-02 10:31:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:31:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110986554] [2024-12-02 10:31:04,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:31:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:31:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:31:08,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071559222] [2024-12-02 10:31:08,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:31:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:08,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:08,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:32:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:23,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 3804 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 10:32:23,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 10:32:23,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-02 10:32:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 10:32:24,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:32:24,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:24,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110986554] [2024-12-02 10:32:24,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:32:24,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071559222] [2024-12-02 10:32:24,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071559222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:32:24,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:32:24,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:32:24,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013611361] [2024-12-02 10:32:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:32:24,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:32:24,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:24,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:32:24,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:32:24,131 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-02 10:32:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:24,483 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-12-02 10:32:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:32:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2024-12-02 10:32:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:24,485 INFO L225 Difference]: With dead ends: 63 [2024-12-02 10:32:24,485 INFO L226 Difference]: Without dead ends: 58 [2024-12-02 10:32:24,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:32:24,486 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 10 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:24,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 284 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:32:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-12-02 10:32:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-12-02 10:32:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:32:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-12-02 10:32:24,495 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 33 [2024-12-02 10:32:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:24,495 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-12-02 10:32:24,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-02 10:32:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-12-02 10:32:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 10:32:24,496 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:24,496 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 10:32:24,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 10:32:24,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:24,697 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:24,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1580059320, now seen corresponding path program 1 times [2024-12-02 10:32:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220477859] [2024-12-02 10:32:24,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:24,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 10:32:29,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220477859] [2024-12-02 10:32:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220477859] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:32:29,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:32:29,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:32:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340118192] [2024-12-02 10:32:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:32:29,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:32:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:29,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:32:29,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:32:29,796 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 10:32:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:29,858 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-12-02 10:32:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:32:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2024-12-02 10:32:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:29,860 INFO L225 Difference]: With dead ends: 62 [2024-12-02 10:32:29,860 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 10:32:29,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:32:29,861 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:29,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:32:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 10:32:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-12-02 10:32:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 36 states have internal predecessors, (36), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:32:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2024-12-02 10:32:29,867 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 33 [2024-12-02 10:32:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:29,868 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2024-12-02 10:32:29,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-12-02 10:32:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2024-12-02 10:32:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 10:32:29,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:29,869 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:32:29,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:32:29,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:29,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2036916889, now seen corresponding path program 1 times [2024-12-02 10:32:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583152247] [2024-12-02 10:32:29,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:32:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:32:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583152247] [2024-12-02 10:32:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583152247] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:32:34,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:32:34,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:32:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110656370] [2024-12-02 10:32:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:32:34,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:32:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:32:34,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:32:34,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:32:34,911 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 10:32:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:32:35,005 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2024-12-02 10:32:35,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:32:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-12-02 10:32:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:32:35,007 INFO L225 Difference]: With dead ends: 59 [2024-12-02 10:32:35,007 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 10:32:35,008 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 [2024-12-02 10:32:35,009 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:32:35,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:32:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 10:32:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-12-02 10:32:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 35 states have internal predecessors, (35), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-12-02 10:32:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-12-02 10:32:35,017 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 39 [2024-12-02 10:32:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:32:35,017 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-12-02 10:32:35,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2024-12-02 10:32:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-12-02 10:32:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 10:32:35,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:32:35,018 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:32:35,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:32:35,019 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:32:35,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:35,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2033163223, now seen corresponding path program 1 times [2024-12-02 10:32:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:32:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192364328] [2024-12-02 10:32:35,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:32:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:32:39,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118953171] [2024-12-02 10:32:39,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:39,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:39,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ce3da4c-058d-464f-9f8a-610b190a6c6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process