./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:51:19,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:51:19,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 18:51:19,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:51:19,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:51:19,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:51:19,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:51:19,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:51:19,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:51:19,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:51:19,733 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:51:19,733 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:51:19,734 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:51:19,734 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:51:19,735 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:51:19,735 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:51:19,736 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:51:19,736 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:51:19,737 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:51:19,737 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:51:19,738 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:51:19,738 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:51:19,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:51:19,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:51:19,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:51:19,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:51:19,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:51:19,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:51:19,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:51:19,742 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:51:19,743 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:51:19,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:51:19,743 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:51:19,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:51:19,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:51:19,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:51:19,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:51:19,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:51:19,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:51:19,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:51:19,747 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:51:19,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:51:19,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:51:19,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:51:19,748 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:51:19,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:51:19,749 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d7fb95278c2cc136033d841944b6b6554a35073619295af30129693cec9c54 [2023-12-02 18:51:19,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:51:19,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:51:19,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:51:19,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:51:19,999 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:51:20,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2023-12-02 18:51:22,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:51:23,201 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:51:23,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness.i [2023-12-02 18:51:23,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/data/2706a7d28/a40399f52b39435b90f722d03c81eaaf/FLAGe5eb4d693 [2023-12-02 18:51:23,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/data/2706a7d28/a40399f52b39435b90f722d03c81eaaf [2023-12-02 18:51:23,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:51:23,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:51:23,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:23,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:51:23,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:51:23,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:23" (1/1) ... [2023-12-02 18:51:23,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59271374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:23, skipping insertion in model container [2023-12-02 18:51:23,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:23" (1/1) ... [2023-12-02 18:51:23,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:51:24,895 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,896 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,915 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:24,918 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,292 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:51:25,294 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:51:25,295 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:51:25,296 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:51:25,298 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:51:25,299 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:51:25,300 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:51:25,301 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:51:25,301 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:51:25,302 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:51:25,556 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,557 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:25,708 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:51:25,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,767 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,799 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 18:51:25,800 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 18:51:25,801 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 18:51:25,802 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 18:51:25,803 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 18:51:25,803 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 18:51:25,804 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 18:51:25,805 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 18:51:25,805 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 18:51:25,805 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 18:51:25,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-12-02 18:51:25,876 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 18:51:25,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8989-9000] [2023-12-02 18:51:25,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:26,207 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,207 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,207 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,208 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,209 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,210 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:51:26,217 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:51:26,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26 WrapperNode [2023-12-02 18:51:26,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:26,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:26,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:51:26,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:51:26,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,387 INFO L138 Inliner]: procedures = 694, calls = 2941, calls flagged for inlining = 62, calls inlined = 12, statements flattened = 1181 [2023-12-02 18:51:26,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:26,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:51:26,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:51:26,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:51:26,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:51:26,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:51:26,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:51:26,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:51:26,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (1/1) ... [2023-12-02 18:51:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:51:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:26,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:51:26,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:51:26,558 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-12-02 18:51:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-12-02 18:51:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-12-02 18:51:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-12-02 18:51:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:51:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 18:51:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 18:51:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-12-02 18:51:26,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 18:51:26,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:51:26,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:51:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:51:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-12-02 18:51:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-12-02 18:51:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:51:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:51:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 18:51:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 18:51:26,561 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 18:51:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 18:51:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-12-02 18:51:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-12-02 18:51:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:51:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:51:26,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-12-02 18:51:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-12-02 18:51:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:51:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:51:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:51:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 18:51:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 18:51:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-12-02 18:51:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-12-02 18:51:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 18:51:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 18:51:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-12-02 18:51:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-12-02 18:51:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-12-02 18:51:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-12-02 18:51:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 18:51:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 18:51:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:51:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-12-02 18:51:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-12-02 18:51:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-12-02 18:51:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-12-02 18:51:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-12-02 18:51:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-12-02 18:51:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-12-02 18:51:26,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-12-02 18:51:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:51:26,852 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:51:26,855 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:51:28,254 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:51:28,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:51:28,529 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 18:51:28,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:28 BoogieIcfgContainer [2023-12-02 18:51:28,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:51:28,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:51:28,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:51:28,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:51:28,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:23" (1/3) ... [2023-12-02 18:51:28,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311883bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:28, skipping insertion in model container [2023-12-02 18:51:28,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:26" (2/3) ... [2023-12-02 18:51:28,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311883bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:28, skipping insertion in model container [2023-12-02 18:51:28,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:28" (3/3) ... [2023-12-02 18:51:28,539 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_harness.i [2023-12-02 18:51:28,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:51:28,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 18:51:28,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:51:28,609 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5b81bff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:51:28,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 18:51:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 167 states have (on average 1.1736526946107784) internal successors, (196), 170 states have internal predecessors, (196), 144 states have call successors, (144), 21 states have call predecessors, (144), 21 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-02 18:51:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-02 18:51:28,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:28,631 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:28,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 18:51:28,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1498542966, now seen corresponding path program 1 times [2023-12-02 18:51:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621900394] [2023-12-02 18:51:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-02 18:51:30,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:30,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621900394] [2023-12-02 18:51:30,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621900394] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:51:30,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437612288] [2023-12-02 18:51:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:30,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:30,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:30,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:30,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:51:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:31,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 3244 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:51:31,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-02 18:51:31,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437612288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:31,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:51:31,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-02 18:51:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698498660] [2023-12-02 18:51:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:31,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:51:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:31,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:51:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:51:31,183 INFO L87 Difference]: Start difference. First operand has 335 states, 167 states have (on average 1.1736526946107784) internal successors, (196), 170 states have internal predecessors, (196), 144 states have call successors, (144), 21 states have call predecessors, (144), 21 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 18:51:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:31,510 INFO L93 Difference]: Finished difference Result 652 states and 1045 transitions. [2023-12-02 18:51:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:51:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 212 [2023-12-02 18:51:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:31,522 INFO L225 Difference]: With dead ends: 652 [2023-12-02 18:51:31,522 INFO L226 Difference]: Without dead ends: 110 [2023-12-02 18:51:31,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:51:31,535 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:31,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:51:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-02 18:51:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-02 18:51:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 18:51:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2023-12-02 18:51:31,586 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 212 [2023-12-02 18:51:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:31,589 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2023-12-02 18:51:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 18:51:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2023-12-02 18:51:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-02 18:51:31,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:31,594 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:31,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:51:31,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 18:51:31,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 18:51:31,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1997887852, now seen corresponding path program 1 times [2023-12-02 18:51:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991012068] [2023-12-02 18:51:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-02 18:51:32,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991012068] [2023-12-02 18:51:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991012068] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:51:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173471448] [2023-12-02 18:51:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:32,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:32,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:51:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:33,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:51:33,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-02 18:51:33,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:33,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173471448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:33,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:51:33,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-02 18:51:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119096004] [2023-12-02 18:51:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:51:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:51:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:51:33,431 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-02 18:51:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:33,592 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2023-12-02 18:51:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:51:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2023-12-02 18:51:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:33,595 INFO L225 Difference]: With dead ends: 110 [2023-12-02 18:51:33,595 INFO L226 Difference]: Without dead ends: 109 [2023-12-02 18:51:33,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:51:33,596 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:33,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 230 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:51:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-02 18:51:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-02 18:51:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 18:51:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2023-12-02 18:51:33,610 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 213 [2023-12-02 18:51:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:33,611 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2023-12-02 18:51:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-12-02 18:51:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2023-12-02 18:51:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-02 18:51:33,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:33,616 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:33,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 18:51:33,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:33,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 18:51:33,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1804981633, now seen corresponding path program 1 times [2023-12-02 18:51:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:33,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545292040] [2023-12-02 18:51:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:33,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-02 18:51:34,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545292040] [2023-12-02 18:51:34,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545292040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:51:34,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105964655] [2023-12-02 18:51:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:34,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:34,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:34,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f0ac79-864e-4e6c-94da-b3af06c821d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:51:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:35,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 3246 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:51:35,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-12-02 18:51:35,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:51:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-12-02 18:51:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105964655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:51:35,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1967123954] [2023-12-02 18:51:35,962 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2023-12-02 18:51:35,962 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:51:35,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:51:35,971 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:51:35,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:04:27,566 WARN L293 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 2918 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:04:33,529 WARN L293 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 2918 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:06:11,960 WARN L293 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 3008 DAG size of output: 3006 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)