./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 9017cdb66795bbbd8b9f62f9b398fe29d04e97206adeead5d1f2400c2ca8a92c --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:04:34,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:04:34,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:04:34,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:04:34,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:04:34,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:04:34,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:04:34,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:04:34,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:04:34,703 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:04:34,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:04:34,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:04:34,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:04:34,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:04:34,706 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:04:34,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:04:34,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:04:34,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:04:34,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:04:34,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:04:34,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:04:34,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:04:34,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:04:34,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:04:34,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:04:34,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:04:34,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:04:34,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:04:34,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:34,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:04:34,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:04:34,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:04:34,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:04:34,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:04:34,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:04:34,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:04:34,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:04:34,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:04:34,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:04:34,713 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9017cdb66795bbbd8b9f62f9b398fe29d04e97206adeead5d1f2400c2ca8a92c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:04:34,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:04:34,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:04:34,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:04:34,969 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:04:34,970 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:04:34,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i [2023-11-23 08:04:36,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:04:36,436 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:04:36,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i [2023-11-23 08:04:36,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0425c2e94/da592bb6fc4843d4b6e68f249e6a4363/FLAGc9c896842 [2023-11-23 08:04:36,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0425c2e94/da592bb6fc4843d4b6e68f249e6a4363 [2023-11-23 08:04:36,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:04:36,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:04:36,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:36,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:04:36,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:04:36,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:36" (1/1) ... [2023-11-23 08:04:36,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e88d340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:36, skipping insertion in model container [2023-11-23 08:04:36,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:36" (1/1) ... [2023-11-23 08:04:36,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:04:36,768 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i[4502,4515] [2023-11-23 08:04:36,774 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i[4562,4575] [2023-11-23 08:04:37,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,242 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,248 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,251 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,266 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,276 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,279 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,280 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,281 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,487 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:37,489 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:37,490 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:37,491 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:37,495 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:37,496 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:37,497 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:37,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:37,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:37,505 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:37,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:37,734 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:04:37,752 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i[4502,4515] [2023-11-23 08:04:37,752 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_shrink_to_fit_harness.i[4562,4575] [2023-11-23 08:04:37,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,811 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,812 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,816 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,817 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,818 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,818 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:37,852 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:37,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:37,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:37,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:37,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:37,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:37,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:37,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:37,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:37,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,888 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,890 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,894 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:37,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7811-7822] [2023-11-23 08:04:37,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:38,137 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,139 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,140 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,140 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,140 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,140 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,140 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,141 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,142 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:38,149 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:04:38,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38 WrapperNode [2023-11-23 08:04:38,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:38,150 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:38,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:04:38,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:04:38,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,282 INFO L138 Inliner]: procedures = 686, calls = 1672, calls flagged for inlining = 53, calls inlined = 11, statements flattened = 778 [2023-11-23 08:04:38,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:38,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:04:38,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:04:38,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:04:38,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:04:38,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:04:38,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:04:38,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:04:38,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (1/1) ... [2023-11-23 08:04:38,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:38,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:38,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:04:38,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:04:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2023-11-23 08:04:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2023-11-23 08:04:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:04:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 08:04:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 08:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:04:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:04:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 08:04:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:04:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:04:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:04:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:04:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:04:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:04:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front_n [2023-11-23 08:04:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front_n [2023-11-23 08:04:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:04:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:04:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:04:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:04:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:04:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:04:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:04:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:04:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 08:04:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 08:04:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 08:04:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 08:04:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:04:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:04:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:04:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:04:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 08:04:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 08:04:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:04:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:04:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:04:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:04:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:04:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:04:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:04:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:04:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2023-11-23 08:04:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2023-11-23 08:04:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:04:38,748 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:04:38,752 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:04:39,482 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:04:39,544 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:04:39,545 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:04:39,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:39 BoogieIcfgContainer [2023-11-23 08:04:39,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:04:39,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:04:39,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:04:39,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:04:39,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:04:36" (1/3) ... [2023-11-23 08:04:39,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c7003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:39, skipping insertion in model container [2023-11-23 08:04:39,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:38" (2/3) ... [2023-11-23 08:04:39,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c7003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:39, skipping insertion in model container [2023-11-23 08:04:39,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:39" (3/3) ... [2023-11-23 08:04:39,551 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_shrink_to_fit_harness.i [2023-11-23 08:04:39,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:04:39,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:04:39,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:04:39,605 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=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;@7ef5fb5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:04:39,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:04:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 128 states have (on average 1.2578125) internal successors, (161), 129 states have internal predecessors, (161), 75 states have call successors, (75), 22 states have call predecessors, (75), 22 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 08:04:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 08:04:39,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:39,617 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:39,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1655017392, now seen corresponding path program 1 times [2023-11-23 08:04:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670855116] [2023-11-23 08:04:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:04:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:04:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:04:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:04:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:04:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:04:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:04:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:04:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:04:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:04:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:04:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:04:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:04:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670855116] [2023-11-23 08:04:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670855116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:40,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638435708] [2023-11-23 08:04:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:40,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:40,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:40,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:40,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:04:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:40,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:04:40,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:04:41,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:41,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638435708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:41,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:04:41,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 08:04:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340882058] [2023-11-23 08:04:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:04:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:04:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:04:41,042 INFO L87 Difference]: Start difference. First operand has 227 states, 128 states have (on average 1.2578125) internal successors, (161), 129 states have internal predecessors, (161), 75 states have call successors, (75), 22 states have call predecessors, (75), 22 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 08:04:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:41,322 INFO L93 Difference]: Finished difference Result 451 states and 677 transitions. [2023-11-23 08:04:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 79 [2023-11-23 08:04:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:41,333 INFO L225 Difference]: With dead ends: 451 [2023-11-23 08:04:41,333 INFO L226 Difference]: Without dead ends: 227 [2023-11-23 08:04:41,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:41,339 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 64 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 939 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-23 08:04:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2023-11-23 08:04:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 128 states have (on average 1.2421875) internal successors, (159), 130 states have internal predecessors, (159), 75 states have call successors, (75), 22 states have call predecessors, (75), 23 states have return successors, (86), 74 states have call predecessors, (86), 74 states have call successors, (86) [2023-11-23 08:04:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2023-11-23 08:04:41,394 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 79 [2023-11-23 08:04:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:41,395 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2023-11-23 08:04:41,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 08:04:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2023-11-23 08:04:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:04:41,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:41,398 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:41,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 08:04:41,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:04:41,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:41,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:41,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1928810826, now seen corresponding path program 1 times [2023-11-23 08:04:41,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:41,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83201397] [2023-11-23 08:04:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:41,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:41,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:41,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999261159] [2023-11-23 08:04:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:41,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:41,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:41,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:41,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:04:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:42,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:04:42,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 08:04:42,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83201397] [2023-11-23 08:04:42,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999261159] [2023-11-23 08:04:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999261159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:04:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248529163] [2023-11-23 08:04:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:42,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:04:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:04:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:04:42,115 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:04:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:42,304 INFO L93 Difference]: Finished difference Result 435 states and 630 transitions. [2023-11-23 08:04:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:42,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2023-11-23 08:04:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:42,307 INFO L225 Difference]: With dead ends: 435 [2023-11-23 08:04:42,307 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 08:04:42,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:04:42,309 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 10 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:42,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 851 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 08:04:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2023-11-23 08:04:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 132 states have internal predecessors, (161), 75 states have call successors, (75), 22 states have call predecessors, (75), 23 states have return successors, (86), 74 states have call predecessors, (86), 74 states have call successors, (86) [2023-11-23 08:04:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2023-11-23 08:04:42,326 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 92 [2023-11-23 08:04:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:42,327 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2023-11-23 08:04:42,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:04:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2023-11-23 08:04:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:04:42,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:42,329 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:42,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 08:04:42,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:42,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1052791820, now seen corresponding path program 1 times [2023-11-23 08:04:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967573390] [2023-11-23 08:04:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:42,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:42,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589823871] [2023-11-23 08:04:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:42,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:42,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:04:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:43,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:04:43,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 08:04:43,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:43,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:43,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967573390] [2023-11-23 08:04:43,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:43,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589823871] [2023-11-23 08:04:43,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589823871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:43,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:43,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:04:43,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268852415] [2023-11-23 08:04:43,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:43,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:04:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:04:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:43,086 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:04:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:43,410 INFO L93 Difference]: Finished difference Result 429 states and 602 transitions. [2023-11-23 08:04:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:04:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 92 [2023-11-23 08:04:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:43,412 INFO L225 Difference]: With dead ends: 429 [2023-11-23 08:04:43,412 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:04:43,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:43,414 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 92 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:43,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1386 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:04:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:04:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-23 08:04:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 132 states have internal predecessors, (161), 75 states have call successors, (75), 22 states have call predecessors, (75), 23 states have return successors, (83), 74 states have call predecessors, (83), 74 states have call successors, (83) [2023-11-23 08:04:43,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2023-11-23 08:04:43,443 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 92 [2023-11-23 08:04:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2023-11-23 08:04:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:04:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2023-11-23 08:04:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 08:04:43,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:43,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2023-11-23 08:04:43,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:43,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:43,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:43,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash -123773216, now seen corresponding path program 2 times [2023-11-23 08:04:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:43,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138343778] [2023-11-23 08:04:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:43,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:43,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255910515] [2023-11-23 08:04:43,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:43,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:43,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:43,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:43,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:04:44,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:04:44,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:44,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:04:44,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:04:44,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138343778] [2023-11-23 08:04:44,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255910515] [2023-11-23 08:04:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255910515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:44,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:04:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349153073] [2023-11-23 08:04:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:44,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:04:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:44,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:04:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:44,285 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:04:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:44,758 INFO L93 Difference]: Finished difference Result 426 states and 594 transitions. [2023-11-23 08:04:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:04:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 105 [2023-11-23 08:04:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:44,760 INFO L225 Difference]: With dead ends: 426 [2023-11-23 08:04:44,760 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:04:44,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:04:44,762 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 99 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:44,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1846 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:04:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:04:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-23 08:04:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 132 states have internal predecessors, (161), 75 states have call successors, (75), 22 states have call predecessors, (75), 23 states have return successors, (81), 74 states have call predecessors, (81), 74 states have call successors, (81) [2023-11-23 08:04:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 317 transitions. [2023-11-23 08:04:44,771 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 317 transitions. Word has length 105 [2023-11-23 08:04:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:44,772 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 317 transitions. [2023-11-23 08:04:44,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:04:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 317 transitions. [2023-11-23 08:04:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 08:04:44,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:44,773 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:44,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:44,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:44,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:44,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2026088638, now seen corresponding path program 1 times [2023-11-23 08:04:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110693596] [2023-11-23 08:04:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:45,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433165431] [2023-11-23 08:04:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:45,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:45,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:45,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:04:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:49,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 407 conjunts are in the unsatisfiable core [2023-11-23 08:04:50,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:50,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-23 08:04:50,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-11-23 08:04:50,468 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2023-11-23 08:04:50,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2023-11-23 08:05:00,688 INFO L349 Elim1Store]: treesize reduction 620, result has 24.7 percent of original size [2023-11-23 08:05:00,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 214 treesize of output 462 [2023-11-23 08:05:01,153 INFO L349 Elim1Store]: treesize reduction 114, result has 34.9 percent of original size [2023-11-23 08:05:01,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 274 Killed by 15