./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i --full-output --preprocessor.use.memory.slicer true --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_linked_list_node_reset_harness_negated.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 ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:28:34,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:28:34,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:28:34,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:28:34,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:28:34,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:28:34,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:28:34,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:28:34,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:28:34,954 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:28:34,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:28:34,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:28:34,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:28:34,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:28:34,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:28:34,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:28:34,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:28:34,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:28:34,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:28:34,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:28:34,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:28:34,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:28:34,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:28:34,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:28:34,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:28:34,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:28:34,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:28:34,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:28:34,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:28:34,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:28:34,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:28:34,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:28:34,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:28:34,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:28:34,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:28:34,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:28:34,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:28:34,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:28:34,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:28:34,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:28:35,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:28:35,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:28:35,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:28:35,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:28:35,264 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:28:35,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:28:36,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:28:36,839 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:28:36,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:28:36,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53c0da78/dcfe331bd55249da99e897f54d5d0ad6/FLAGae2645910 [2023-11-23 07:28:36,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e53c0da78/dcfe331bd55249da99e897f54d5d0ad6 [2023-11-23 07:28:36,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:28:36,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:28:36,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:28:36,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:28:36,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:28:36,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:28:36" (1/1) ... [2023-11-23 07:28:36,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa47b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:36, skipping insertion in model container [2023-11-23 07:28:36,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:28:36" (1/1) ... [2023-11-23 07:28:37,011 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:28:37,250 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 07:28:37,258 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 07:28:37,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,827 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,851 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:37,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,098 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:28:38,099 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:28:38,100 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:28:38,101 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:28:38,102 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:28:38,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:28:38,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:28:38,104 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:28:38,104 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:28:38,105 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:28:38,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:28:38,266 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:28:38,285 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 07:28:38,286 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 07:28:38,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,338 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,383 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:28:38,420 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:28:38,421 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:28:38,421 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:28:38,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:28:38,429 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:28:38,429 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:28:38,430 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:28:38,432 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:28:38,432 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:28:38,433 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:28:38,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:28:38,648 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,648 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,648 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,649 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,650 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:28:38,679 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:28:38,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38 WrapperNode [2023-11-23 07:28:38,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:28:38,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:28:38,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:28:38,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:28:38,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,794 INFO L138 Inliner]: procedures = 678, calls = 1032, calls flagged for inlining = 48, calls inlined = 3, statements flattened = 27 [2023-11-23 07:28:38,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:28:38,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:28:38,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:28:38,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:28:38,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,841 INFO L188 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 5, 0, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-23 07:28:38,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:28:38,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:28:38,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:28:38,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:28:38,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (1/1) ... [2023-11-23 07:28:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:28:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:38,929 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 07:28:38,957 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 07:28:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2023-11-23 07:28:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2023-11-23 07:28:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:28:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:28:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:28:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:28:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:28:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:28:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:28:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:28:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:28:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:28:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:28:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:28:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 07:28:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 07:28:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 07:28:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 07:28:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 07:28:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 07:28:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 07:28:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 07:28:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:28:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:28:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:28:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:28:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:28:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:28:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:28:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:28:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:28:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:28:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:28:39,226 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:28:39,227 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:28:39,373 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:28:39,412 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:28:39,413 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 07:28:39,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:28:39 BoogieIcfgContainer [2023-11-23 07:28:39,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:28:39,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:28:39,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:28:39,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:28:39,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:28:36" (1/3) ... [2023-11-23 07:28:39,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f635ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:28:39, skipping insertion in model container [2023-11-23 07:28:39,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:28:38" (2/3) ... [2023-11-23 07:28:39,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f635ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:28:39, skipping insertion in model container [2023-11-23 07:28:39,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:28:39" (3/3) ... [2023-11-23 07:28:39,422 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:28:39,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:28:39,436 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:28:39,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:28:39,483 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;@3296384d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:28:39,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:28:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 07:28:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 07:28:39,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:39,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:28:39,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:39,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash 739877561, now seen corresponding path program 1 times [2023-11-23 07:28:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:39,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028717666] [2023-11-23 07:28:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:39,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:28:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:28:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028717666] [2023-11-23 07:28:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028717666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:28:39,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:28:39,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:28:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764143167] [2023-11-23 07:28:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:28:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:28:39,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:39,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:28:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:28:39,988 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 07:28:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:40,021 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-11-23 07:28:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:28:40,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-23 07:28:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:40,036 INFO L225 Difference]: With dead ends: 62 [2023-11-23 07:28:40,036 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 07:28:40,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:28:40,041 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:40,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:28:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 07:28:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 07:28:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 07:28:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-23 07:28:40,082 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2023-11-23 07:28:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:40,082 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-23 07:28:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 07:28:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-23 07:28:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 07:28:40,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:40,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:28:40,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:28:40,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:40,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1937728446, now seen corresponding path program 1 times [2023-11-23 07:28:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035092509] [2023-11-23 07:28:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:28:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:28:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035092509] [2023-11-23 07:28:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035092509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:28:40,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:28:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:28:40,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329669212] [2023-11-23 07:28:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:28:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:28:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:28:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:28:40,723 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:28:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:40,967 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2023-11-23 07:28:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:28:40,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-23 07:28:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:40,971 INFO L225 Difference]: With dead ends: 52 [2023-11-23 07:28:40,971 INFO L226 Difference]: Without dead ends: 50 [2023-11-23 07:28:40,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:28:40,974 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:40,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 61 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:28:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-23 07:28:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2023-11-23 07:28:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-11-23 07:28:40,993 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2023-11-23 07:28:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:40,993 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-11-23 07:28:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:28:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-11-23 07:28:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 07:28:41,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:41,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:28:41,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 07:28:41,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:41,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash 789176651, now seen corresponding path program 1 times [2023-11-23 07:28:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282745621] [2023-11-23 07:28:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:28:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:28:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:41,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282745621] [2023-11-23 07:28:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282745621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:28:41,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:28:41,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:28:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23941763] [2023-11-23 07:28:41,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:28:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:28:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:41,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:28:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:28:41,187 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 07:28:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:41,300 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2023-11-23 07:28:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:28:41,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-23 07:28:41,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:41,304 INFO L225 Difference]: With dead ends: 68 [2023-11-23 07:28:41,304 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 07:28:41,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:28:41,309 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:41,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 43 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:28:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 07:28:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-23 07:28:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-23 07:28:41,329 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2023-11-23 07:28:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:41,330 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-23 07:28:41,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 07:28:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-23 07:28:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 07:28:41,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:41,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:28:41,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 07:28:41,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:41,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -832526417, now seen corresponding path program 1 times [2023-11-23 07:28:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:41,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286907410] [2023-11-23 07:28:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:41,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:28:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:28:41,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:41,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286907410] [2023-11-23 07:28:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286907410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427783364] [2023-11-23 07:28:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:41,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:41,656 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 07:28:41,676 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 07:28:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:41,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:28:41,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:28:41,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:28:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427783364] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:41,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:28:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 11 [2023-11-23 07:28:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519029512] [2023-11-23 07:28:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:28:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:28:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:28:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:28:41,949 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:28:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:41,974 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2023-11-23 07:28:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:28:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-23 07:28:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:41,976 INFO L225 Difference]: With dead ends: 63 [2023-11-23 07:28:41,976 INFO L226 Difference]: Without dead ends: 41 [2023-11-23 07:28:41,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:28:41,977 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:41,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:28:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-23 07:28:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-23 07:28:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-11-23 07:28:41,990 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2023-11-23 07:28:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:41,990 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-11-23 07:28:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:28:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-11-23 07:28:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 07:28:41,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:41,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:28:42,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:28:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:42,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:42,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 752238966, now seen corresponding path program 1 times [2023-11-23 07:28:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025005741] [2023-11-23 07:28:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:42,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:28:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:28:42,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025005741] [2023-11-23 07:28:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025005741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418861100] [2023-11-23 07:28:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:42,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:42,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:42,442 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 07:28:42,460 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 07:28:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:42,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 07:28:42,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:28:42,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:28:42,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418861100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:28:42,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:28:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-23 07:28:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638044339] [2023-11-23 07:28:42,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:28:42,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:28:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:28:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:28:42,690 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:28:42,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:42,852 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2023-11-23 07:28:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:28:42,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-23 07:28:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:42,854 INFO L225 Difference]: With dead ends: 74 [2023-11-23 07:28:42,854 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 07:28:42,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:28:42,855 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:42,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:28:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 07:28:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 07:28:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-23 07:28:42,863 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 27 [2023-11-23 07:28:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:42,863 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-23 07:28:42,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:28:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-23 07:28:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 07:28:42,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:42,864 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 07:28:42,886 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 07:28:43,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:43,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:43,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1601323758, now seen corresponding path program 2 times [2023-11-23 07:28:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744843941] [2023-11-23 07:28:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:28:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:28:43,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744843941] [2023-11-23 07:28:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744843941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040965199] [2023-11-23 07:28:43,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:28:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:43,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:43,584 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 07:28:43,602 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 07:28:43,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:28:43,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:28:43,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 07:28:43,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 07:28:43,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 07:28:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040965199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:28:43,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:28:43,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 17 [2023-11-23 07:28:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769313003] [2023-11-23 07:28:43,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:28:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:28:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:28:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:28:43,920 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:44,507 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-23 07:28:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:28:44,508 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 30 [2023-11-23 07:28:44,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:44,509 INFO L225 Difference]: With dead ends: 92 [2023-11-23 07:28:44,509 INFO L226 Difference]: Without dead ends: 57 [2023-11-23 07:28:44,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:28:44,510 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:44,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 119 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:28:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-23 07:28:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2023-11-23 07:28:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-23 07:28:44,518 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 30 [2023-11-23 07:28:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:44,518 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-23 07:28:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-23 07:28:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 07:28:44,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:44,523 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-23 07:28:44,542 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 07:28:44,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:44,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:44,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1008759627, now seen corresponding path program 3 times [2023-11-23 07:28:44,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:44,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903859563] [2023-11-23 07:28:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:44,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:44,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:28:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:28:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903859563] [2023-11-23 07:28:45,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903859563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955983145] [2023-11-23 07:28:45,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:28:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:45,349 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 07:28:45,366 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 07:28:45,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 07:28:45,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:28:45,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 07:28:45,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:28:45,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:28:45,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955983145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:28:45,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:28:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-11-23 07:28:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277568438] [2023-11-23 07:28:45,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:28:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 07:28:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 07:28:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:28:45,920 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:28:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:46,406 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2023-11-23 07:28:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:28:46,407 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-11-23 07:28:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:46,408 INFO L225 Difference]: With dead ends: 94 [2023-11-23 07:28:46,408 INFO L226 Difference]: Without dead ends: 58 [2023-11-23 07:28:46,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=634, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:28:46,409 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:46,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:28:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-23 07:28:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-23 07:28:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-23 07:28:46,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2023-11-23 07:28:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:46,427 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-23 07:28:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:28:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-23 07:28:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 07:28:46,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:46,433 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-11-23 07:28:46,456 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 07:28:46,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:46,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:46,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1057647385, now seen corresponding path program 4 times [2023-11-23 07:28:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891315326] [2023-11-23 07:28:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 07:28:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:28:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891315326] [2023-11-23 07:28:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891315326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316230639] [2023-11-23 07:28:47,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:28:47,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:47,723 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 07:28:47,737 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 07:28:47,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:28:47,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:28:47,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 07:28:47,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:28:48,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 07:28:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316230639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:28:48,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:28:48,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 8] total 34 [2023-11-23 07:28:48,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315858473] [2023-11-23 07:28:48,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:28:48,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 07:28:48,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 07:28:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 07:28:48,542 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:50,328 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2023-11-23 07:28:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 07:28:50,329 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2023-11-23 07:28:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:50,330 INFO L225 Difference]: With dead ends: 130 [2023-11-23 07:28:50,330 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 07:28:50,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=350, Invalid=3310, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 07:28:50,332 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:50,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 192 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:28:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 07:28:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2023-11-23 07:28:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:28:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2023-11-23 07:28:50,356 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 44 [2023-11-23 07:28:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:50,357 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2023-11-23 07:28:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2023-11-23 07:28:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 07:28:50,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:50,359 INFO L195 NwaCegarLoop]: trace histogram [13, 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] [2023-11-23 07:28:50,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:28:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:50,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:50,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1331136858, now seen corresponding path program 1 times [2023-11-23 07:28:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:50,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040729795] [2023-11-23 07:28:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:28:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:28:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:50,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:28:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:28:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:28:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:28:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:28:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040729795] [2023-11-23 07:28:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040729795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:28:51,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:28:51,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:28:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362213799] [2023-11-23 07:28:51,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:28:51,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:28:51,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:28:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:28:51,066 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 07:28:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:51,351 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-11-23 07:28:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:28:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2023-11-23 07:28:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:51,355 INFO L225 Difference]: With dead ends: 78 [2023-11-23 07:28:51,355 INFO L226 Difference]: Without dead ends: 71 [2023-11-23 07:28:51,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:28:51,357 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 67 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:28:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-23 07:28:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-23 07:28:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 07:28:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2023-11-23 07:28:51,404 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 50 [2023-11-23 07:28:51,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:51,405 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2023-11-23 07:28:51,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 07:28:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2023-11-23 07:28:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 07:28:51,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:51,407 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 10, 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 07:28:51,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:28:51,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:51,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 963644341, now seen corresponding path program 5 times [2023-11-23 07:28:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:51,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342503030] [2023-11-23 07:28:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:51,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:52,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:28:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-23 07:28:52,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:28:52,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342503030] [2023-11-23 07:28:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342503030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:28:52,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393447375] [2023-11-23 07:28:52,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 07:28:52,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:28:52,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:28:52,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:28:54,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-23 07:28:54,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:28:54,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 07:28:54,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:28:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 07:28:55,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:28:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 07:28:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393447375] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:28:56,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:28:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 14] total 53 [2023-11-23 07:28:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507198210] [2023-11-23 07:28:56,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:28:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-23 07:28:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:28:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-23 07:28:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:28:56,329 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:28:59,053 INFO L93 Difference]: Finished difference Result 167 states and 207 transitions. [2023-11-23 07:28:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 07:28:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-23 07:28:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:28:59,055 INFO L225 Difference]: With dead ends: 167 [2023-11-23 07:28:59,055 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 07:28:59,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=647, Invalid=6835, Unknown=0, NotChecked=0, Total=7482 [2023-11-23 07:28:59,059 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 238 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:28:59,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 309 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:28:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 07:28:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2023-11-23 07:28:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 70 states have internal predecessors, (87), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 07:28:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2023-11-23 07:28:59,072 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 57 [2023-11-23 07:28:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:28:59,073 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2023-11-23 07:28:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:28:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2023-11-23 07:28:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 07:28:59,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:28:59,074 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 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 07:28:59,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:28:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:28:59,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:28:59,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:28:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1862610117, now seen corresponding path program 6 times [2023-11-23 07:28:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:28:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232675196] [2023-11-23 07:28:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:28:59,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:28:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 07:28:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:28:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:28:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:29:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 07:29:00,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:29:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232675196] [2023-11-23 07:29:00,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232675196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:29:00,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563607703] [2023-11-23 07:29:00,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 07:29:00,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:29:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:29:00,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:29:00,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:29:15,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-11-23 07:29:15,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:15,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 07:29:15,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 07:29:15,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 07:29:16,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563607703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:16,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:29:16,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2023-11-23 07:29:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045655092] [2023-11-23 07:29:16,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-23 07:29:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:29:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-23 07:29:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 07:29:16,368 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:29:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:16,918 INFO L93 Difference]: Finished difference Result 146 states and 185 transitions. [2023-11-23 07:29:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 07:29:16,918 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2023-11-23 07:29:16,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:16,919 INFO L225 Difference]: With dead ends: 146 [2023-11-23 07:29:16,919 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 07:29:16,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=471, Invalid=2285, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:29:16,921 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:16,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 222 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:29:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 07:29:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-23 07:29:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 07:29:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2023-11-23 07:29:16,935 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 70 [2023-11-23 07:29:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:16,935 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2023-11-23 07:29:16,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 07:29:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2023-11-23 07:29:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 07:29:16,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:16,937 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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 07:29:16,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:29:17,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:17,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1432469435, now seen corresponding path program 7 times [2023-11-23 07:29:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:29:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708574095] [2023-11-23 07:29:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:29:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 07:29:17,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 07:29:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 07:29:17,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 07:29:17,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 07:29:17,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 07:29:17,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 07:29:17,519 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2023-11-23 07:29:17,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 07:29:17,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res299 [2023-11-23 07:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,577 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,577 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,578 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,582 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,583 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,583 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,587 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:17,589 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret300 could not be translated [2023-11-23 07:29:17,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:29:17 BoogieIcfgContainer [2023-11-23 07:29:17,604 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 07:29:17,605 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 07:29:17,605 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 07:29:17,606 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 07:29:17,606 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:28:39" (3/4) ... [2023-11-23 07:29:17,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 07:29:17,609 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 07:29:17,610 INFO L158 Benchmark]: Toolchain (without parser) took 40714.92ms. Allocated memory was 192.9MB in the beginning and 509.6MB in the end (delta: 316.7MB). Free memory was 120.1MB in the beginning and 393.5MB in the end (delta: -273.4MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,610 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 07:29:17,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1787.60ms. Allocated memory was 192.9MB in the beginning and 249.6MB in the end (delta: 56.6MB). Free memory was 120.1MB in the beginning and 169.1MB in the end (delta: -49.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.48ms. Allocated memory is still 249.6MB. Free memory was 169.1MB in the beginning and 163.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,611 INFO L158 Benchmark]: Boogie Preprocessor took 100.91ms. Allocated memory is still 249.6MB. Free memory was 163.9MB in the beginning and 159.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,612 INFO L158 Benchmark]: RCFGBuilder took 516.06ms. Allocated memory is still 249.6MB. Free memory was 159.7MB in the beginning and 137.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,612 INFO L158 Benchmark]: TraceAbstraction took 38189.35ms. Allocated memory was 249.6MB in the beginning and 509.6MB in the end (delta: 260.0MB). Free memory was 136.6MB in the beginning and 394.5MB in the end (delta: -257.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,613 INFO L158 Benchmark]: Witness Printer took 4.11ms. Allocated memory is still 509.6MB. Free memory was 394.5MB in the beginning and 393.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 07:29:17,614 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1787.60ms. Allocated memory was 192.9MB in the beginning and 249.6MB in the end (delta: 56.6MB). Free memory was 120.1MB in the beginning and 169.1MB in the end (delta: -49.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.48ms. Allocated memory is still 249.6MB. Free memory was 169.1MB in the beginning and 163.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.91ms. Allocated memory is still 249.6MB. Free memory was 163.9MB in the beginning and 159.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 516.06ms. Allocated memory is still 249.6MB. Free memory was 159.7MB in the beginning and 137.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 38189.35ms. Allocated memory was 249.6MB in the beginning and 509.6MB in the end (delta: 260.0MB). Free memory was 136.6MB in the beginning and 394.5MB in the end (delta: -257.9MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 4.11ms. Allocated memory is still 509.6MB. Free memory was 394.5MB in the beginning and 393.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res299 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret300 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_real at line -1. Possible FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7354] CALL aws_linked_list_node_reset_harness() [L7346] struct aws_linked_list_node node; VAL [node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] CALL aws_linked_list_node_reset(&node) VAL [node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] CALL assume_abort_if_not((node != ((void *)0) )) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] RET assume_abort_if_not((node != ((void *)0) )) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4678] FCALL memset(&(*node), 0, sizeof(*node)) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [\old(bufsize)=16, buf={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND FALSE !(i < bufsize) VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2345-L2347] return 1 ; VAL [\old(bufsize)=16, \result=1, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] RET, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL __VERIFIER_assert(!((aws_is_mem_zeroed(&(*node), sizeof(*node))))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.1s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 575 mSDsluCounter, 1259 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1066 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5712 IncrementalHoareTripleChecker+Invalid, 5796 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 193 mSDtfsCounter, 5712 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=11, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 17.9s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 769 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 962 ConstructedInterpolants, 0 QuantifiedInterpolants, 3145 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2413 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 1248/2171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 07:29:17,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_linked_list_node_reset_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:29:19,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:29:20,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-23 07:29:20,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:29:20,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:29:20,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:29:20,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:29:20,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:29:20,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:29:20,097 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:29:20,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:29:20,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:29:20,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:29:20,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:29:20,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:29:20,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:29:20,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:29:20,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:29:20,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:29:20,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:29:20,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:29:20,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 07:29:20,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 07:29:20,105 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 07:29:20,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:29:20,106 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:29:20,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:29:20,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:29:20,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:29:20,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:29:20,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:29:20,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:29:20,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:29:20,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:29:20,109 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 07:29:20,109 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 07:29:20,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:29:20,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:29:20,111 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:29:20,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:29:20,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:29:20,111 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 07:29:20,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:29:20,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:29:20,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:29:20,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:29:20,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:29:20,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:29:20,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:29:21,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:29:22,254 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:29:22,256 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:29:22,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23cd7043d/84bc0c619c324f26a5dab9eeff043596/FLAG9f5a89cd2 [2023-11-23 07:29:22,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23cd7043d/84bc0c619c324f26a5dab9eeff043596 [2023-11-23 07:29:22,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:29:22,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:29:22,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:29:22,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:29:22,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:29:22,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:29:22" (1/1) ... [2023-11-23 07:29:22,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397290e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:22, skipping insertion in model container [2023-11-23 07:29:22,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:29:22" (1/1) ... [2023-11-23 07:29:22,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:29:22,685 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 07:29:22,693 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 07:29:23,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,504 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,509 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,516 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,517 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:23,794 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:29:23,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:29:23,796 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:29:23,798 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:29:23,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:29:23,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:29:23,800 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:29:23,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:29:23,801 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:29:23,802 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:29:23,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:29:23,988 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 07:29:24,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:29:24,022 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 07:29:24,022 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 07:29:24,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,070 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,071 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,072 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,123 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:29:24,124 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:29:24,124 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:29:24,125 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:29:24,131 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:29:24,133 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:29:24,133 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:29:24,134 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:29:24,134 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:29:24,134 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:29:24,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:29:24,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:29:24,201 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 07:29:24,203 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 07:29:24,236 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,241 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,258 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,258 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:29:24,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:29:24,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:29:24,290 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:29:24,290 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:29:24,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:29:24,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:29:24,291 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:29:24,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:29:24,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:29:24,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:29:24,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:29:24,591 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,591 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,591 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,591 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,591 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,592 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,592 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,592 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,592 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,593 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:29:24,601 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:29:24,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24 WrapperNode [2023-11-23 07:29:24,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:29:24,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:29:24,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:29:24,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:29:24,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,746 INFO L138 Inliner]: procedures = 697, calls = 1032, calls flagged for inlining = 48, calls inlined = 3, statements flattened = 28 [2023-11-23 07:29:24,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:29:24,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:29:24,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:29:24,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:29:24,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,795 INFO L188 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 5, 2, 0]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 1 writes are split as follows [0, 0, 1, 0]. [2023-11-23 07:29:24,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:29:24,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:29:24,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:29:24,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:29:24,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (1/1) ... [2023-11-23 07:29:24,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:29:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:29:24,885 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 07:29:24,910 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 07:29:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2023-11-23 07:29:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2023-11-23 07:29:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 07:29:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 07:29:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:29:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-23 07:29:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-23 07:29:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:29:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:29:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-23 07:29:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-23 07:29:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-23 07:29:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-23 07:29:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 07:29:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 07:29:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 07:29:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 07:29:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 07:29:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 07:29:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 07:29:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 07:29:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:29:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:29:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:29:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:29:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:29:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:29:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:29:25,207 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:29:25,212 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:29:25,408 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:29:25,451 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:29:25,460 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 07:29:25,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:29:25 BoogieIcfgContainer [2023-11-23 07:29:25,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:29:25,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:29:25,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:29:25,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:29:25,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:29:22" (1/3) ... [2023-11-23 07:29:25,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a30f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:29:25, skipping insertion in model container [2023-11-23 07:29:25,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:29:24" (2/3) ... [2023-11-23 07:29:25,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a30f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:29:25, skipping insertion in model container [2023-11-23 07:29:25,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:29:25" (3/3) ... [2023-11-23 07:29:25,471 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness_negated.i [2023-11-23 07:29:25,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:29:25,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:29:25,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:29:25,531 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;@3189b264, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:29:25,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:29:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 07:29:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 07:29:25,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:25,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:29:25,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:25,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 739877561, now seen corresponding path program 1 times [2023-11-23 07:29:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582151982] [2023-11-23 07:29:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:25,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:25,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 07:29:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:25,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:29:25,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:25,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:29:25,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582151982] [2023-11-23 07:29:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582151982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:29:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:29:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:29:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467291686] [2023-11-23 07:29:25,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:29:25,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:29:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:29:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:29:25,827 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 07:29:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:25,861 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-11-23 07:29:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:29:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-23 07:29:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:25,868 INFO L225 Difference]: With dead ends: 62 [2023-11-23 07:29:25,868 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 07:29:25,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:29:25,873 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:25,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:29:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 07:29:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 07:29:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 07:29:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-23 07:29:25,902 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2023-11-23 07:29:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:25,903 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-23 07:29:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 07:29:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-23 07:29:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 07:29:25,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:25,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:29:25,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 07:29:26,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:26,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:26,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1027192809, now seen corresponding path program 1 times [2023-11-23 07:29:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:26,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811828909] [2023-11-23 07:29:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:26,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:26,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:26,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 07:29:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:26,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:29:26,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:26,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:29:26,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:26,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811828909] [2023-11-23 07:29:26,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811828909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:29:26,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:29:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:29:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560540057] [2023-11-23 07:29:26,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:29:26,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:29:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:29:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:29:26,316 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 07:29:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:26,419 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-23 07:29:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:29:26,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-23 07:29:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:26,421 INFO L225 Difference]: With dead ends: 54 [2023-11-23 07:29:26,421 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 07:29:26,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 07:29:26,424 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:26,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:29:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 07:29:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 07:29:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 07:29:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-11-23 07:29:26,440 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2023-11-23 07:29:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:26,440 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-11-23 07:29:26,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 07:29:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-11-23 07:29:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 07:29:26,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:26,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:29:26,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:26,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:26,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -383816379, now seen corresponding path program 1 times [2023-11-23 07:29:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:26,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372392083] [2023-11-23 07:29:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:26,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:26,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:26,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 07:29:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:26,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 07:29:26,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:26,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:26,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372392083] [2023-11-23 07:29:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372392083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:26,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:26,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:29:26,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048203543] [2023-11-23 07:29:26,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:29:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:29:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:29:26,889 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:27,026 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-11-23 07:29:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:29:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2023-11-23 07:29:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:27,029 INFO L225 Difference]: With dead ends: 58 [2023-11-23 07:29:27,029 INFO L226 Difference]: Without dead ends: 36 [2023-11-23 07:29:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:29:27,030 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:29:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-23 07:29:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-23 07:29:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 07:29:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-11-23 07:29:27,043 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2023-11-23 07:29:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:27,043 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-11-23 07:29:27,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-11-23 07:29:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 07:29:27,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:27,045 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 07:29:27,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:27,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:27,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:27,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash -475386135, now seen corresponding path program 2 times [2023-11-23 07:29:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:27,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333316771] [2023-11-23 07:29:27,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:29:27,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:27,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:27,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 07:29:27,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:29:27,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:27,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:29:27,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 07:29:27,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:29:27,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333316771] [2023-11-23 07:29:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333316771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:29:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:29:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:29:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025937324] [2023-11-23 07:29:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:29:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:29:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:29:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:29:27,457 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:29:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:27,519 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2023-11-23 07:29:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:29:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-23 07:29:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:27,521 INFO L225 Difference]: With dead ends: 46 [2023-11-23 07:29:27,522 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 07:29:27,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:29:27,523 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:27,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:29:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 07:29:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-11-23 07:29:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-23 07:29:27,536 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2023-11-23 07:29:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:27,537 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-23 07:29:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:29:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 07:29:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 07:29:27,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:27,538 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 07:29:27,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-23 07:29:27,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:27,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:27,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2043448334, now seen corresponding path program 1 times [2023-11-23 07:29:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956643742] [2023-11-23 07:29:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:27,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:27,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:27,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 07:29:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:27,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 07:29:27,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:27,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 07:29:28,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956643742] [2023-11-23 07:29:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956643742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:28,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 07:29:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720146977] [2023-11-23 07:29:28,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:29:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:29:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:29:28,207 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:28,571 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2023-11-23 07:29:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:29:28,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-11-23 07:29:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:28,575 INFO L225 Difference]: With dead ends: 78 [2023-11-23 07:29:28,575 INFO L226 Difference]: Without dead ends: 49 [2023-11-23 07:29:28,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:29:28,576 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 236 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:29:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-23 07:29:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-23 07:29:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-23 07:29:28,584 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 28 [2023-11-23 07:29:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:28,585 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-23 07:29:28,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-23 07:29:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 07:29:28,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:28,591 INFO L195 NwaCegarLoop]: trace histogram [10, 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 07:29:28,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:28,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:28,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:28,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1084462706, now seen corresponding path program 2 times [2023-11-23 07:29:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:28,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579856270] [2023-11-23 07:29:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:29:28,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:28,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:28,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 07:29:28,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:29:28,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:28,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 07:29:28,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 07:29:28,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:29:28,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579856270] [2023-11-23 07:29:28,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579856270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:29:28,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:29:28,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:29:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786194428] [2023-11-23 07:29:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:29:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:29:28,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:29:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:29:28,963 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:29:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:29,038 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2023-11-23 07:29:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:29:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-11-23 07:29:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:29,039 INFO L225 Difference]: With dead ends: 75 [2023-11-23 07:29:29,039 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 07:29:29,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 07:29:29,040 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:29,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:29:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 07:29:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2023-11-23 07:29:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-23 07:29:29,052 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 34 [2023-11-23 07:29:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:29,054 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-23 07:29:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 07:29:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-23 07:29:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 07:29:29,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:29,055 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 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 07:29:29,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-23 07:29:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:29,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:29,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:29,264 INFO L85 PathProgramCache]: Analyzing trace with hash 437816185, now seen corresponding path program 1 times [2023-11-23 07:29:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:29,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54283554] [2023-11-23 07:29:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:29,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:29,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:29,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:29,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 07:29:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:29,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 07:29:29,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:29:29,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:29:30,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:30,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54283554] [2023-11-23 07:29:30,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54283554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:30,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:30,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 07:29:30,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964946897] [2023-11-23 07:29:30,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:29:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:29:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:29:30,069 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:30,724 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2023-11-23 07:29:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 07:29:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-23 07:29:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:30,726 INFO L225 Difference]: With dead ends: 86 [2023-11-23 07:29:30,726 INFO L226 Difference]: Without dead ends: 56 [2023-11-23 07:29:30,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:29:30,728 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:30,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 411 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:29:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-23 07:29:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-23 07:29:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2023-11-23 07:29:30,737 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 36 [2023-11-23 07:29:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:30,737 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2023-11-23 07:29:30,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 07:29:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2023-11-23 07:29:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 07:29:30,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:30,738 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 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 07:29:30,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:30,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:30,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1652675079, now seen corresponding path program 2 times [2023-11-23 07:29:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:30,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424831538] [2023-11-23 07:29:30,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:29:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:30,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:30,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 07:29:31,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:29:31,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:31,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:29:31,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:31,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:31,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:31,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424831538] [2023-11-23 07:29:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424831538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:31,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:31,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 07:29:31,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700826319] [2023-11-23 07:29:31,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:31,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:29:31,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:31,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:29:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:29:31,318 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:31,493 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2023-11-23 07:29:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:29:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-11-23 07:29:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:31,495 INFO L225 Difference]: With dead ends: 94 [2023-11-23 07:29:31,495 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 07:29:31,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:29:31,496 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:31,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 120 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:29:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 07:29:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2023-11-23 07:29:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-11-23 07:29:31,505 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 42 [2023-11-23 07:29:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:31,506 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-11-23 07:29:31,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-11-23 07:29:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 07:29:31,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:31,507 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2023-11-23 07:29:31,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:31,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:31,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1781533326, now seen corresponding path program 3 times [2023-11-23 07:29:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235156822] [2023-11-23 07:29:31,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:29:31,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:31,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:31,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 07:29:31,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 07:29:31,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:31,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:29:31,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:32,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:32,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235156822] [2023-11-23 07:29:32,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235156822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:32,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-23 07:29:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017753653] [2023-11-23 07:29:32,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:29:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:29:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:29:32,573 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:34,001 INFO L93 Difference]: Finished difference Result 124 states and 160 transitions. [2023-11-23 07:29:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:29:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-23 07:29:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:34,003 INFO L225 Difference]: With dead ends: 124 [2023-11-23 07:29:34,003 INFO L226 Difference]: Without dead ends: 92 [2023-11-23 07:29:34,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:29:34,004 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 66 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:34,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 270 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:29:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-23 07:29:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2023-11-23 07:29:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 07:29:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-11-23 07:29:34,015 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 48 [2023-11-23 07:29:34,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:34,016 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-11-23 07:29:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-11-23 07:29:34,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 07:29:34,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:34,017 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2023-11-23 07:29:34,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:34,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:34,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:34,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2096103613, now seen corresponding path program 1 times [2023-11-23 07:29:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:34,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783506117] [2023-11-23 07:29:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:29:34,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:34,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:34,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 07:29:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:29:34,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:29:34,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 07:29:34,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:29:34,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783506117] [2023-11-23 07:29:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783506117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:29:34,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:29:34,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:29:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176691164] [2023-11-23 07:29:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:29:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:29:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:29:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:29:34,470 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 07:29:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:34,525 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2023-11-23 07:29:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:29:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2023-11-23 07:29:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:34,528 INFO L225 Difference]: With dead ends: 81 [2023-11-23 07:29:34,528 INFO L226 Difference]: Without dead ends: 74 [2023-11-23 07:29:34,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:29:34,529 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:34,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 155 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:29:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-23 07:29:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-23 07:29:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 07:29:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2023-11-23 07:29:34,538 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 53 [2023-11-23 07:29:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:34,538 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2023-11-23 07:29:34,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 07:29:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2023-11-23 07:29:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 07:29:34,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:34,539 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 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 07:29:34,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:34,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:34,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:34,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1978136456, now seen corresponding path program 4 times [2023-11-23 07:29:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271501057] [2023-11-23 07:29:34,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 07:29:34,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:34,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:34,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:34,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 07:29:35,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 07:29:35,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:29:35,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 07:29:35,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:29:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:35,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:29:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:29:36,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:29:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271501057] [2023-11-23 07:29:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271501057] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:29:36,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:29:36,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 07:29:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811737266] [2023-11-23 07:29:36,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:29:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:29:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:29:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:29:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:29:36,318 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:29:37,549 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2023-11-23 07:29:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 07:29:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-23 07:29:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:29:37,551 INFO L225 Difference]: With dead ends: 160 [2023-11-23 07:29:37,551 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 07:29:37,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:29:37,552 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 195 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:29:37,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 572 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:29:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 07:29:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2023-11-23 07:29:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 07:29:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2023-11-23 07:29:37,564 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 60 [2023-11-23 07:29:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:29:37,567 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2023-11-23 07:29:37,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 07:29:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2023-11-23 07:29:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 07:29:37,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:29:37,570 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 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 07:29:37,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:37,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:37,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:29:37,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:29:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2001701022, now seen corresponding path program 5 times [2023-11-23 07:29:37,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:29:37,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522703246] [2023-11-23 07:29:37,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 07:29:37,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:29:37,783 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:29:37,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 07:29:38,228 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-23 07:29:38,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-23 07:29:38,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 07:29:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 07:29:38,622 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-23 07:29:38,622 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 07:29:38,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 07:29:38,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:29:38,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:29:38,834 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1] [2023-11-23 07:29:38,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 07:29:38,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res290 [2023-11-23 07:29:38,891 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,892 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,892 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,894 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,894 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,898 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,898 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated [2023-11-23 07:29:38,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:29:38 BoogieIcfgContainer [2023-11-23 07:29:38,910 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 07:29:38,911 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 07:29:38,911 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 07:29:38,911 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 07:29:38,912 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:29:25" (3/4) ... [2023-11-23 07:29:38,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 07:29:38,922 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res290 [2023-11-23 07:29:38,923 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,923 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,924 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,924 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,925 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,925 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,926 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,926 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,926 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,927 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,927 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,928 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,928 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,929 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,929 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,929 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 07:29:38,930 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated [2023-11-23 07:29:38,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 07:29:38,973 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 07:29:38,974 INFO L158 Benchmark]: Toolchain (without parser) took 16659.30ms. Allocated memory was 65.0MB in the beginning and 180.4MB in the end (delta: 115.3MB). Free memory was 34.7MB in the beginning and 110.9MB in the end (delta: -76.2MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,974 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 07:29:38,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2285.93ms. Allocated memory was 65.0MB in the beginning and 140.5MB in the end (delta: 75.5MB). Free memory was 34.5MB in the beginning and 57.1MB in the end (delta: -22.6MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 142.83ms. Allocated memory is still 140.5MB. Free memory was 57.1MB in the beginning and 92.0MB in the end (delta: -34.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,975 INFO L158 Benchmark]: Boogie Preprocessor took 100.09ms. Allocated memory is still 140.5MB. Free memory was 92.0MB in the beginning and 87.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,975 INFO L158 Benchmark]: RCFGBuilder took 613.76ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 62.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,975 INFO L158 Benchmark]: TraceAbstraction took 13447.77ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 62.1MB in the beginning and 116.1MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 07:29:38,975 INFO L158 Benchmark]: Witness Printer took 62.02ms. Allocated memory is still 180.4MB. Free memory was 116.1MB in the beginning and 110.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 07:29:38,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2285.93ms. Allocated memory was 65.0MB in the beginning and 140.5MB in the end (delta: 75.5MB). Free memory was 34.5MB in the beginning and 57.1MB in the end (delta: -22.6MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 142.83ms. Allocated memory is still 140.5MB. Free memory was 57.1MB in the beginning and 92.0MB in the end (delta: -34.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.09ms. Allocated memory is still 140.5MB. Free memory was 92.0MB in the beginning and 87.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 613.76ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 62.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 13447.77ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 62.1MB in the beginning and 116.1MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.02ms. Allocated memory is still 180.4MB. Free memory was 116.1MB in the beginning and 110.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res290 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res290 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7354] CALL aws_linked_list_node_reset_harness() [L7346] struct aws_linked_list_node node; VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] CALL aws_linked_list_node_reset(&node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] CALL assume_abort_if_not((node != ((void *)0) )) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] RET assume_abort_if_not((node != ((void *)0) )) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4678] FCALL memset(&(*node), 0, sizeof(*node)) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [\old(bufsize)=16, buf={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND FALSE !(i < bufsize) VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2345-L2347] return 1 ; VAL [\old(bufsize)=16, \result=1, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] RET, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL __VERIFIER_assert(!((aws_is_mem_zeroed(&(*node), sizeof(*node))))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 298 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 2259 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1893 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1175 IncrementalHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 366 mSDtfsCounter, 1175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=11, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 469 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 1470 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2074 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1026/1392 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 07:29:39,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE