./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:01:35,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:01:35,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:01:35,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:01:35,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:01:35,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:01:35,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:01:35,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:01:35,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:01:35,862 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:01:35,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:01:35,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:01:35,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:01:35,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:01:35,865 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:01:35,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:01:35,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:01:35,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:01:35,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:01:35,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:01:35,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:01:35,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:01:35,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:01:35,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:01:35,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:01:35,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:01:35,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:01:35,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:01:35,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:01:35,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:01:35,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:01:35,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:01:35,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:01:35,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:01:35,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:01:35,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:01:35,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:01:35,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:01:35,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:01:35,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:01:36,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:01:36,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:01:36,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:01:36,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:01:36,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:01:36,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i [2023-11-23 08:01:37,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:01:38,408 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:01:38,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i [2023-11-23 08:01:38,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f5342fbc/402d19a2add74ce3bb5f0a1bb3757099/FLAG1cad469e2 [2023-11-23 08:01:38,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f5342fbc/402d19a2add74ce3bb5f0a1bb3757099 [2023-11-23 08:01:38,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:01:38,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:01:38,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:01:38,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:01:38,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:01:38,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:01:38" (1/1) ... [2023-11-23 08:01:38,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a9010a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:38, skipping insertion in model container [2023-11-23 08:01:38,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:01:38" (1/1) ... [2023-11-23 08:01:38,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:01:38,901 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2023-11-23 08:01:38,910 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2023-11-23 08:01:40,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,329 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,329 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,356 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,359 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,640 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:01:40,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:01:40,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:01:40,642 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:01:40,643 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:01:40,643 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:01:40,644 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:01:40,644 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:01:40,645 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:01:40,645 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:01:40,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:01:40,837 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:01:40,847 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2023-11-23 08:01:40,848 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2023-11-23 08:01:40,881 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,882 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,883 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,890 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,891 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,892 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,892 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,894 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,894 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,894 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,926 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:01:40,927 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:01:40,928 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:01:40,928 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:01:40,929 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:01:40,929 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:01:40,930 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:01:40,930 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:01:40,930 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:01:40,931 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:01:40,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,957 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:01:40,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2023-11-23 08:01:40,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:01:41,166 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,167 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,167 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,167 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,167 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,167 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,168 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,169 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,169 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:01:41,185 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:01:41,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41 WrapperNode [2023-11-23 08:01:41,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:01:41,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:01:41,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:01:41,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:01:41,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,374 INFO L138 Inliner]: procedures = 690, calls = 1685, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2023-11-23 08:01:41,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:01:41,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:01:41,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:01:41,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:01:41,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:01:41,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:01:41,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:01:41,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:01:41,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (1/1) ... [2023-11-23 08:01:41,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:01:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:41,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:01:41,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:01:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2023-11-23 08:01:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2023-11-23 08:01:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:01:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 08:01:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 08:01:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:01:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:01:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:01:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:01:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:01:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:01:41,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:01:41,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:01:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:01:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:01:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:01:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:01:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:01:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:01:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:01:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:01:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:01:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:01:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:01:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:01:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 08:01:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 08:01:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:01:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:01:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:01:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:01:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:01:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:01:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:01:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:01:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:01:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:01:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2023-11-23 08:01:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2023-11-23 08:01:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2023-11-23 08:01:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2023-11-23 08:01:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:01:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:01:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:01:41,799 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:01:41,801 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:01:42,513 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:01:42,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:01:42,594 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:01:42,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:01:42 BoogieIcfgContainer [2023-11-23 08:01:42,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:01:42,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:01:42,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:01:42,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:01:42,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:01:38" (1/3) ... [2023-11-23 08:01:42,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46671671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:01:42, skipping insertion in model container [2023-11-23 08:01:42,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:01:41" (2/3) ... [2023-11-23 08:01:42,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46671671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:01:42, skipping insertion in model container [2023-11-23 08:01:42,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:01:42" (3/3) ... [2023-11-23 08:01:42,602 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2023-11-23 08:01:42,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:01:42,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:01:42,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:01:42,664 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;@4660e8ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:01:42,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:01:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 94 states have internal predecessors, (115), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-23 08:01:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 08:01:42,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:42,679 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:42,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:42,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash -341684761, now seen corresponding path program 1 times [2023-11-23 08:01:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908167556] [2023-11-23 08:01:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:01:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:01:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:01:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:01:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:01:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:01:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:01:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:01:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:01:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:01:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:01:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:01:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:01:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908167556] [2023-11-23 08:01:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908167556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:01:43,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:01:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:01:43,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119531190] [2023-11-23 08:01:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:01:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:01:43,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:43,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:01:43,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:01:43,543 INFO L87 Difference]: Start difference. First operand has 168 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 94 states have internal predecessors, (115), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 08:01:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:44,883 INFO L93 Difference]: Finished difference Result 379 states and 599 transitions. [2023-11-23 08:01:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:01:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-11-23 08:01:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:44,895 INFO L225 Difference]: With dead ends: 379 [2023-11-23 08:01:44,895 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 08:01:44,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:01:44,903 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 63 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 250 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:01:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 08:01:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2023-11-23 08:01:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-23 08:01:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2023-11-23 08:01:44,967 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 81 [2023-11-23 08:01:44,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:44,968 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2023-11-23 08:01:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 08:01:44,968 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2023-11-23 08:01:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 08:01:44,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:44,978 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:01:44,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:44,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 852195819, now seen corresponding path program 1 times [2023-11-23 08:01:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168292306] [2023-11-23 08:01:44,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:01:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:01:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:01:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:01:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:01:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:01:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:01:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:01:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:01:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:01:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:01:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:01:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:01:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:01:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168292306] [2023-11-23 08:01:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168292306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:01:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811260815] [2023-11-23 08:01:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:45,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:45,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:45,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:45,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:01:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:46,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 2119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:01:46,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:01:46,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:01:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811260815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:01:46,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:01:46,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 08:01:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079293089] [2023-11-23 08:01:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:01:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:01:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:01:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:01:46,600 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 08:01:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:46,885 INFO L93 Difference]: Finished difference Result 302 states and 423 transitions. [2023-11-23 08:01:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:01:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2023-11-23 08:01:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:46,888 INFO L225 Difference]: With dead ends: 302 [2023-11-23 08:01:46,889 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 08:01:46,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:01:46,890 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 38 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:46,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 676 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:01:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 08:01:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-23 08:01:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 95 states have internal predecessors, (113), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2023-11-23 08:01:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 236 transitions. [2023-11-23 08:01:46,908 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 236 transitions. Word has length 81 [2023-11-23 08:01:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:46,908 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 236 transitions. [2023-11-23 08:01:46,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 08:01:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 236 transitions. [2023-11-23 08:01:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 08:01:46,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:46,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:46,936 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 08:01:47,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:47,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:47,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2004127031, now seen corresponding path program 1 times [2023-11-23 08:01:47,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:47,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771548668] [2023-11-23 08:01:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:47,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:01:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294508718] [2023-11-23 08:01:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:47,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:47,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:47,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:47,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:01:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:01:47,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:01:47,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 08:01:47,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:01:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771548668] [2023-11-23 08:01:47,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:01:47,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294508718] [2023-11-23 08:01:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294508718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:01:47,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:01:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:01:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008818292] [2023-11-23 08:01:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:01:47,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:01:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:01:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:01:47,710 INFO L87 Difference]: Start difference. First operand 168 states and 236 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:01:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:48,142 INFO L93 Difference]: Finished difference Result 295 states and 418 transitions. [2023-11-23 08:01:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:01:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2023-11-23 08:01:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:48,145 INFO L225 Difference]: With dead ends: 295 [2023-11-23 08:01:48,145 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 08:01:48,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:01:48,147 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 78 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:48,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 966 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:01:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 08:01:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-11-23 08:01:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 95 states have internal predecessors, (113), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-23 08:01:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 233 transitions. [2023-11-23 08:01:48,162 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 233 transitions. Word has length 94 [2023-11-23 08:01:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:48,163 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 233 transitions. [2023-11-23 08:01:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:01:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 233 transitions. [2023-11-23 08:01:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 08:01:48,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:48,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:48,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:48,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:01:48,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:48,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2083015435, now seen corresponding path program 2 times [2023-11-23 08:01:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339487635] [2023-11-23 08:01:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:48,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:01:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023236025] [2023-11-23 08:01:48,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:01:48,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:48,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:48,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:01:48,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:01:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:01:48,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:01:48,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:01:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:01:49,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:01:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:01:49,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339487635] [2023-11-23 08:01:49,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:01:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023236025] [2023-11-23 08:01:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023236025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:01:49,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:01:49,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:01:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627978873] [2023-11-23 08:01:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:01:49,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:01:49,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:01:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:01:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:01:49,035 INFO L87 Difference]: Start difference. First operand 168 states and 233 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:01:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:01:49,632 INFO L93 Difference]: Finished difference Result 303 states and 427 transitions. [2023-11-23 08:01:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:01:49,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 107 [2023-11-23 08:01:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:01:49,640 INFO L225 Difference]: With dead ends: 303 [2023-11-23 08:01:49,640 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 08:01:49,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:01:49,657 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 85 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:01:49,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1301 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:01:49,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 08:01:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-23 08:01:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 100 states have internal predecessors, (119), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2023-11-23 08:01:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2023-11-23 08:01:49,711 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 107 [2023-11-23 08:01:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:01:49,713 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2023-11-23 08:01:49,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:01:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2023-11-23 08:01:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 08:01:49,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:01:49,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:01:49,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:01:49,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:49,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:01:49,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:01:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash -947494607, now seen corresponding path program 1 times [2023-11-23 08:01:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:01:49,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304029820] [2023-11-23 08:01:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:01:50,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:01:50,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621464665] [2023-11-23 08:01:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:01:50,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:01:50,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:01:50,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:01:50,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:02:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:02:13,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 307 conjunts are in the unsatisfiable core [2023-11-23 08:02:13,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:02:13,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:02:13,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:02:26,197 WARN L293 SmtUtils]: Spent 10.90s on a formula simplification. DAG size of input: 928 DAG size of output: 176 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 08:02:26,198 INFO L349 Elim1Store]: treesize reduction 3096, result has 10.0 percent of original size [2023-11-23 08:02:26,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 21 new quantified variables, introduced 178 case distinctions, treesize of input 398 treesize of output 1216 Killed by 15