./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_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_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/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_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/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_1afc0a2a-f14b-4768-9566-99df413cf3ed/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 0f5ff1c08c55a92aff06fce55a4ad0167f5dcf5fb5557c6a304be36abfa8056c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:09:08,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:09:08,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 06:09:08,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:09:08,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:09:08,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:09:08,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:09:08,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:09:08,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:09:08,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:09:08,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:09:08,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:09:08,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:09:08,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:09:08,299 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:09:08,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:09:08,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:09:08,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:09:08,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:09:08,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:09:08,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:09:08,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:09:08,302 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/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 -> 0f5ff1c08c55a92aff06fce55a4ad0167f5dcf5fb5557c6a304be36abfa8056c [2024-12-02 06:09:08,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:09:08,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:09:08,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:09:08,542 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:09:08,542 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:09:08,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i [2024-12-02 06:09:11,162 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/data/db5e3eb2f/000b73cac89b40cba219251fc63c0fef/FLAG81b166cb9 [2024-12-02 06:09:11,495 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:09:11,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i [2024-12-02 06:09:11,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/data/db5e3eb2f/000b73cac89b40cba219251fc63c0fef/FLAG81b166cb9 [2024-12-02 06:09:11,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/data/db5e3eb2f/000b73cac89b40cba219251fc63c0fef [2024-12-02 06:09:11,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:09:11,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:09:11,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:09:11,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:09:11,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:09:11,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:09:11" (1/1) ... [2024-12-02 06:09:11,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f81ac17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:11, skipping insertion in model container [2024-12-02 06:09:11,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:09:11" (1/1) ... [2024-12-02 06:09:11,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:09:11,973 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4497,4510] [2024-12-02 06:09:11,978 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4557,4570] [2024-12-02 06:09:12,522 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,538 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,538 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,540 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,541 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,543 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,544 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,544 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,544 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:12,974 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156447,156460] [2024-12-02 06:09:12,975 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156666,156679] [2024-12-02 06:09:12,975 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156862,156875] [2024-12-02 06:09:12,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:09:12,998 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:09:13,010 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4497,4510] [2024-12-02 06:09:13,011 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4557,4570] [2024-12-02 06:09:13,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,066 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,067 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,068 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,068 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,069 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,070 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,070 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,070 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 06:09:13,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [6944-6955] [2024-12-02 06:09:13,159 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156447,156460] [2024-12-02 06:09:13,159 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156666,156679] [2024-12-02 06:09:13,160 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_1afc0a2a-f14b-4768-9566-99df413cf3ed/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156862,156875] [2024-12-02 06:09:13,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:09:13,302 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:09:13,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13 WrapperNode [2024-12-02 06:09:13,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:09:13,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:09:13,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:09:13,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:09:13,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,386 INFO L138 Inliner]: procedures = 669, calls = 1209, calls flagged for inlining = 43, calls inlined = 6, statements flattened = 499 [2024-12-02 06:09:13,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:09:13,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:09:13,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:09:13,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:09:13,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,445 INFO L175 MemorySlicer]: Split 240 memory accesses to 2 slices as follows [2, 238]. 99 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 232 writes are split as follows [0, 232]. [2024-12-02 06:09:13,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,461 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:09:13,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:09:13,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:09:13,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:09:13,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (1/1) ... [2024-12-02 06:09:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:09:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:09:13,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:09:13,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 06:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 06:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 06:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 06:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 06:09:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_u64_saturating [2024-12-02 06:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_u64_saturating [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 06:09:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:09:13,692 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:09:13,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:09:19,094 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-02 06:09:19,094 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:09:19,101 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:09:19,101 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:09:19,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:09:19 BoogieIcfgContainer [2024-12-02 06:09:19,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:09:19,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:09:19,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:09:19,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:09:19,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:09:11" (1/3) ... [2024-12-02 06:09:19,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c8e78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:09:19, skipping insertion in model container [2024-12-02 06:09:19,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:09:13" (2/3) ... [2024-12-02 06:09:19,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c8e78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:09:19, skipping insertion in model container [2024-12-02 06:09:19,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:09:19" (3/3) ... [2024-12-02 06:09:19,109 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_mul_size_saturating_harness.i [2024-12-02 06:09:19,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:09:19,122 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_mul_size_saturating_harness.i that has 5 procedures, 42 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 06:09:19,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:09:19,173 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;@e036403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:09:19,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:09:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 06:09:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:09:19,181 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:09:19,181 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:09:19,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:09:19,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:09:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1434111465, now seen corresponding path program 1 times [2024-12-02 06:09:19,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:09:19,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724390945] [2024-12-02 06:09:19,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:09:19,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:09:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:09:24,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403133612] [2024-12-02 06:09:24,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:09:24,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:09:24,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:09:24,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:09:24,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:14:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:14:58,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 06:14:58,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:14:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:14:59,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:15:13,791 WARN L286 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:15:19,995 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 06:15:19,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:15:19,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724390945] [2024-12-02 06:15:19,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:15:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403133612] [2024-12-02 06:15:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403133612] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 06:15:19,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:15:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 06:15:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633463408] [2024-12-02 06:15:19,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:15:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:15:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:15:20,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:15:20,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:15:20,017 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:15:24,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:28,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:32,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:36,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:39,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:42,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:52,970 WARN L286 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:15:55,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:57,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:15:59,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:16:03,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:16:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:04,412 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-12-02 06:16:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:16:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-12-02 06:16:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:04,421 INFO L225 Difference]: With dead ends: 60 [2024-12-02 06:16:04,421 INFO L226 Difference]: Without dead ends: 36 [2024-12-02 06:16:04,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:16:04,425 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:04,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 247 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 5 Unknown, 0 Unchecked, 33.8s Time] [2024-12-02 06:16:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-02 06:16:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-12-02 06:16:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:16:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-12-02 06:16:04,449 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2024-12-02 06:16:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:04,450 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-12-02 06:16:04,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:16:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-12-02 06:16:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:16:04,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:04,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:16:04,653 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2024-12-02 06:16:04,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2024-12-02 06:16:04,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:16:04,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:04,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1436941610, now seen corresponding path program 1 times [2024-12-02 06:16:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784028488] [2024-12-02 06:16:04,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:16:11,857 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 06:16:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:16:11,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784028488] [2024-12-02 06:16:11,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784028488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:16:11,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:16:11,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:16:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227135019] [2024-12-02 06:16:11,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:16:11,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:16:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:11,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:16:11,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:16:11,859 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:16:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:12,045 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-12-02 06:16:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:16:12,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-12-02 06:16:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:12,046 INFO L225 Difference]: With dead ends: 41 [2024-12-02 06:16:12,047 INFO L226 Difference]: Without dead ends: 34 [2024-12-02 06:16:12,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:16:12,047 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:12,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 179 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:16:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-12-02 06:16:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-12-02 06:16:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:16:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-12-02 06:16:12,051 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2024-12-02 06:16:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:12,051 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-12-02 06:16:12,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:16:12,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-12-02 06:16:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:16:12,051 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:12,051 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:16:12,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:16:12,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:12,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash 340895897, now seen corresponding path program 1 times [2024-12-02 06:16:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878220140] [2024-12-02 06:16:12,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:16:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754692965] [2024-12-02 06:16:16,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:16:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:16:16,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:16:16,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:19:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:42,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 06:19:42,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:19:43,387 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 06:19:43,387 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:19:43,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:43,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878220140] [2024-12-02 06:19:43,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:19:43,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754692965] [2024-12-02 06:19:43,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754692965] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:43,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:43,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:19:43,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426166445] [2024-12-02 06:19:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:43,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:19:43,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:43,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:19:43,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:19:43,389 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:19:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:43,793 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-12-02 06:19:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:19:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-12-02 06:19:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:43,794 INFO L225 Difference]: With dead ends: 38 [2024-12-02 06:19:43,794 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 06:19:43,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:19:43,795 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:43,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 188 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:19:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 06:19:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-12-02 06:19:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:19:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-12-02 06:19:43,799 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2024-12-02 06:19:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:43,799 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-12-02 06:19:43,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:19:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-12-02 06:19:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:19:43,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:43,800 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:44,001 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2024-12-02 06:19:44,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 06:19:44,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:44,025 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:44,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 338065752, now seen corresponding path program 1 times [2024-12-02 06:19:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369785797] [2024-12-02 06:19:44,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:19:48,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862828752] [2024-12-02 06:19:48,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:48,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:19:48,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:19:48,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:22:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:01,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 3734 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 06:22:01,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:02,088 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 06:22:02,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:22:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369785797] [2024-12-02 06:22:02,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:22:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862828752] [2024-12-02 06:22:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862828752] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:02,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:22:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392103729] [2024-12-02 06:22:02,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:02,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:22:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:02,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:22:02,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:22:02,090 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:22:02,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:02,190 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-12-02 06:22:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:22:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-12-02 06:22:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:02,191 INFO L225 Difference]: With dead ends: 37 [2024-12-02 06:22:02,191 INFO L226 Difference]: Without dead ends: 26 [2024-12-02 06:22:02,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:22:02,192 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:02,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:22:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-12-02 06:22:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-12-02 06:22:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 06:22:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-12-02 06:22:02,197 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2024-12-02 06:22:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:02,197 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-12-02 06:22:02,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 06:22:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-12-02 06:22:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 06:22:02,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:02,198 INFO L218 NwaCegarLoop]: trace histogram [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 06:22:02,398 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2024-12-02 06:22:02,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:22:02,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:02,417 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:02,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1147099788, now seen corresponding path program 1 times [2024-12-02 06:22:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:02,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90591206] [2024-12-02 06:22:02,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:22:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:08,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90591206] [2024-12-02 06:22:08,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90591206] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:22:08,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:22:08,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:22:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620629992] [2024-12-02 06:22:08,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:22:08,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:22:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:08,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:22:08,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:22:08,482 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 06:22:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:22:08,698 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-12-02 06:22:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:22:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-12-02 06:22:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:22:08,699 INFO L225 Difference]: With dead ends: 36 [2024-12-02 06:22:08,699 INFO L226 Difference]: Without dead ends: 31 [2024-12-02 06:22:08,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:22:08,700 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:22:08,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:22:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-12-02 06:22:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-12-02 06:22:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 06:22:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-12-02 06:22:08,705 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2024-12-02 06:22:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:22:08,706 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-12-02 06:22:08,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 06:22:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-12-02 06:22:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 06:22:08,706 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:22:08,707 INFO L218 NwaCegarLoop]: trace histogram [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 06:22:08,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:22:08,707 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:22:08,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:22:08,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1144269643, now seen corresponding path program 1 times [2024-12-02 06:22:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:22:08,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479598967] [2024-12-02 06:22:08,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:22:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:22:13,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501952415] [2024-12-02 06:22:13,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:13,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:13,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1afc0a2a-f14b-4768-9566-99df413cf3ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process