./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_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_array_list_init_dynamic_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 4fba53eae116f038bd962430e19a91efa0043f9d79722c85dacab33d4a787520 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:39:06,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:39:06,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:39:06,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:39:06,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:39:06,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:39:06,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:39:06,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:39:06,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:39:06,250 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:39:06,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:39:06,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:39:06,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:39:06,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:39:06,253 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:39:06,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:39:06,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:39:06,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:39:06,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:39:06,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:39:06,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:39:06,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:39:06,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:39:06,255 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:39:06,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:39:06,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:39:06,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:39:06,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:39:06,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:39:06,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:39:06,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:39:06,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:39:06,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:39:06,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:39:06,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fba53eae116f038bd962430e19a91efa0043f9d79722c85dacab33d4a787520 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:39:06,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:39:06,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:39:06,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:39:06,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:39:06,498 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:39:06,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness_negated.i [2023-11-23 06:39:07,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:39:08,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:39:08,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_init_dynamic_harness_negated.i [2023-11-23 06:39:08,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a1959c2/a494e55a02eb43e7a804794d52b11cc6/FLAG98517438a [2023-11-23 06:39:08,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a1959c2/a494e55a02eb43e7a804794d52b11cc6 [2023-11-23 06:39:08,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:39:08,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:39:08,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:39:08,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:39:08,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:39:08,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:08" (1/1) ... [2023-11-23 06:39:08,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2c957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:08, skipping insertion in model container [2023-11-23 06:39:08,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:39:08" (1/1) ... [2023-11-23 06:39:08,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:39:08,358 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_init_dynamic_harness_negated.i[4501,4514] [2023-11-23 06:39:08,366 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_init_dynamic_harness_negated.i[4561,4574] [2023-11-23 06:39:08,885 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,892 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,893 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,896 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,908 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,908 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,909 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,909 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,910 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,911 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,911 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:08,912 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:39:09,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:39:09,089 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:39:09,090 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:39:09,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:39:09,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:39:09,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:39:09,092 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:39:09,092 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:39:09,093 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:39:09,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,169 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:39:09,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:39:09,232 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_init_dynamic_harness_negated.i[4501,4514] [2023-11-23 06:39:09,232 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_init_dynamic_harness_negated.i[4561,4574] [2023-11-23 06:39:09,262 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,262 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,262 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,263 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,304 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:39:09,304 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:39:09,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:39:09,305 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:39:09,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:39:09,306 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:39:09,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:39:09,307 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:39:09,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:39:09,308 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:39:09,319 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:39:09,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7517-7528] [2023-11-23 06:39:09,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:39:09,477 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,478 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,478 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,478 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,478 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,479 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,479 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,479 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,479 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,480 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,480 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,481 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,481 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,481 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,481 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:39:09,487 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:39:09,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09 WrapperNode [2023-11-23 06:39:09,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:39:09,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:39:09,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:39:09,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:39:09,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,608 INFO L138 Inliner]: procedures = 689, calls = 1562, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 596 [2023-11-23 06:39:09,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:39:09,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:39:09,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:39:09,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:39:09,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,740 INFO L188 MemorySlicer]: Split 278 memory accesses to 7 slices as follows [2, 0, 236, 26, 6, 5, 3]. 85 percent of accesses are in the largest equivalence class. The 252 initializations are split as follows [2, 0, 236, 5, 1, 5, 3]. The 6 writes are split as follows [0, 0, 0, 5, 1, 0, 0]. [2023-11-23 06:39:09,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:39:09,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:39:09,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:39:09,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:39:09,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (1/1) ... [2023-11-23 06:39:09,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:39:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:09,850 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 06:39:09,864 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 06:39:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 06:39:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 06:39:09,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:39:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 06:39:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 06:39:09,902 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:39:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:39:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 06:39:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 06:39:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:39:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:39:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:39:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:39:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:39:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:39:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:39:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:39:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:39:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:39:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:39:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:39:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:39:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:39:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 06:39:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 06:39:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 06:39:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-23 06:39:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-23 06:39:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-23 06:39:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-23 06:39:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-23 06:39:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:39:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:39:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 06:39:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 06:39:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:39:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:39:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:39:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:39:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:39:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:39:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:39:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 06:39:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:39:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:39:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:39:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:39:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:39:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:39:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:39:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:39:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:39:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:39:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:39:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:39:10,195 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:39:10,197 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:39:10,687 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:39:10,755 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:39:10,756 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 06:39:10,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:10 BoogieIcfgContainer [2023-11-23 06:39:10,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:39:10,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:39:10,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:39:10,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:39:10,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:39:08" (1/3) ... [2023-11-23 06:39:10,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b2015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:10, skipping insertion in model container [2023-11-23 06:39:10,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:39:09" (2/3) ... [2023-11-23 06:39:10,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b2015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:39:10, skipping insertion in model container [2023-11-23 06:39:10,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:39:10" (3/3) ... [2023-11-23 06:39:10,764 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness_negated.i [2023-11-23 06:39:10,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:39:10,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:39:10,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:39:10,819 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;@42bec073, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:39:10,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:39:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 06:39:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 06:39:10,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:10,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:10,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:10,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash 792539764, now seen corresponding path program 1 times [2023-11-23 06:39:10,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245773971] [2023-11-23 06:39:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:10,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:11,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245773971] [2023-11-23 06:39:11,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 06:39:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093367596] [2023-11-23 06:39:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:11,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:11,244 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 06:39:11,245 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 06:39:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:11,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 06:39:11,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 06:39:11,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:39:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093367596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:39:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:39:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 06:39:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770990594] [2023-11-23 06:39:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:39:11,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 06:39:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 06:39:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 06:39:11,690 INFO L87 Difference]: Start difference. First operand has 121 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 73 states have internal predecessors, (92), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 06:39:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:11,785 INFO L93 Difference]: Finished difference Result 238 states and 336 transitions. [2023-11-23 06:39:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 06:39:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-11-23 06:39:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:11,794 INFO L225 Difference]: With dead ends: 238 [2023-11-23 06:39:11,794 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 06:39:11,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 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 06:39:11,799 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:11,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 06:39:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 06:39:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 06:39:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 70 states have internal predecessors, (84), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2023-11-23 06:39:11,834 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 50 [2023-11-23 06:39:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:11,835 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2023-11-23 06:39:11,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 06:39:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2023-11-23 06:39:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 06:39:11,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:11,837 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:11,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 06:39:12,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 06:39:12,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:12,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:12,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1166668930, now seen corresponding path program 1 times [2023-11-23 06:39:12,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310226221] [2023-11-23 06:39:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:12,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937375472] [2023-11-23 06:39:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:12,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:12,203 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 06:39:12,219 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 06:39:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:12,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:39:12,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:12,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:39:12,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310226221] [2023-11-23 06:39:12,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937375472] [2023-11-23 06:39:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937375472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:39:12,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:39:12,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:39:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179472701] [2023-11-23 06:39:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:39:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:39:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:39:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:39:12,644 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 06:39:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:12,776 INFO L93 Difference]: Finished difference Result 223 states and 283 transitions. [2023-11-23 06:39:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 06:39:12,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-11-23 06:39:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:12,777 INFO L225 Difference]: With dead ends: 223 [2023-11-23 06:39:12,777 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 06:39:12,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 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 06:39:12,779 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:12,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 409 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 06:39:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 06:39:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-23 06:39:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 71 states have internal predecessors, (85), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 151 transitions. [2023-11-23 06:39:12,804 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 151 transitions. Word has length 55 [2023-11-23 06:39:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:12,805 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 151 transitions. [2023-11-23 06:39:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 06:39:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 151 transitions. [2023-11-23 06:39:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 06:39:12,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:12,806 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:12,839 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 06:39:13,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 06:39:13,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:13,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1754307532, now seen corresponding path program 1 times [2023-11-23 06:39:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255019431] [2023-11-23 06:39:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:13,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418129799] [2023-11-23 06:39:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:13,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:13,101 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 06:39:13,125 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 06:39:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:39:13,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:39:13,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:13,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:39:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:13,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255019431] [2023-11-23 06:39:13,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:13,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418129799] [2023-11-23 06:39:13,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418129799] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:39:13,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:39:13,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 06:39:13,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812992242] [2023-11-23 06:39:13,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:39:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:39:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:39:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:39:13,747 INFO L87 Difference]: Start difference. First operand 118 states and 151 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:13,938 INFO L93 Difference]: Finished difference Result 227 states and 289 transitions. [2023-11-23 06:39:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:39:13,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 56 [2023-11-23 06:39:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:13,940 INFO L225 Difference]: With dead ends: 227 [2023-11-23 06:39:13,940 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 06:39:13,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:39:13,942 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:13,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 406 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:39:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 06:39:13,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-23 06:39:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 74 states have internal predecessors, (88), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2023-11-23 06:39:13,950 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 56 [2023-11-23 06:39:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:13,951 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2023-11-23 06:39:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2023-11-23 06:39:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 06:39:13,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:13,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 06:39:13,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 06:39:14,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:14,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:14,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash -631142146, now seen corresponding path program 2 times [2023-11-23 06:39:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514020119] [2023-11-23 06:39:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:14,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:14,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189534435] [2023-11-23 06:39:14,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:39:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:14,240 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 06:39:14,256 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 06:39:14,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:39:14,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:39:14,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 06:39:14,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:14,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:39:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514020119] [2023-11-23 06:39:15,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189534435] [2023-11-23 06:39:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189534435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:39:15,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:39:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 06:39:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925195688] [2023-11-23 06:39:15,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:39:15,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:39:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:39:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:39:15,088 INFO L87 Difference]: Start difference. First operand 121 states and 154 transitions. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:15,545 INFO L93 Difference]: Finished difference Result 233 states and 298 transitions. [2023-11-23 06:39:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:39:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-11-23 06:39:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:15,547 INFO L225 Difference]: With dead ends: 233 [2023-11-23 06:39:15,547 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 06:39:15,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:39:15,548 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:15,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1357 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:39:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 06:39:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-23 06:39:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2023-11-23 06:39:15,556 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 59 [2023-11-23 06:39:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:15,557 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2023-11-23 06:39:15,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2023-11-23 06:39:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 06:39:15,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:15,558 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:15,577 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 06:39:15,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:15,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:15,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1314561342, now seen corresponding path program 3 times [2023-11-23 06:39:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501712179] [2023-11-23 06:39:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:15,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:15,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111216379] [2023-11-23 06:39:15,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:39:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:15,893 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 06:39:15,938 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 06:39:20,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-23 06:39:20,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:39:20,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 06:39:20,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:20,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:39:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501712179] [2023-11-23 06:39:21,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111216379] [2023-11-23 06:39:21,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111216379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:39:21,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:39:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 06:39:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467097960] [2023-11-23 06:39:21,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:39:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 06:39:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 06:39:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:39:21,084 INFO L87 Difference]: Start difference. First operand 127 states and 160 transitions. Second operand has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:22,609 INFO L93 Difference]: Finished difference Result 245 states and 316 transitions. [2023-11-23 06:39:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 06:39:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2023-11-23 06:39:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:22,621 INFO L225 Difference]: With dead ends: 245 [2023-11-23 06:39:22,621 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 06:39:22,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 06:39:22,623 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:22,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1759 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:39:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 06:39:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-23 06:39:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 92 states have internal predecessors, (106), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2023-11-23 06:39:22,645 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 65 [2023-11-23 06:39:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:22,646 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2023-11-23 06:39:22,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2023-11-23 06:39:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 06:39:22,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:22,647 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:22,679 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 06:39:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:22,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:22,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2105554366, now seen corresponding path program 4 times [2023-11-23 06:39:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181092164] [2023-11-23 06:39:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:22,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:22,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:22,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357081531] [2023-11-23 06:39:22,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 06:39:22,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:22,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:22,966 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 06:39:22,980 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 06:39:23,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 06:39:23,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:39:23,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 2456 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 06:39:23,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:39:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:24,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:39:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:39:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:39:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181092164] [2023-11-23 06:39:25,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:39:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357081531] [2023-11-23 06:39:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357081531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:39:25,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:39:25,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-23 06:39:25,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160291390] [2023-11-23 06:39:25,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:39:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-23 06:39:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:39:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-23 06:39:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=1792, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 06:39:25,138 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 50 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 50 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:39:30,831 INFO L93 Difference]: Finished difference Result 263 states and 340 transitions. [2023-11-23 06:39:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 06:39:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 50 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2023-11-23 06:39:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:39:30,835 INFO L225 Difference]: With dead ends: 263 [2023-11-23 06:39:30,835 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 06:39:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1406, Invalid=3016, Unknown=0, NotChecked=0, Total=4422 [2023-11-23 06:39:30,838 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:39:30,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3244 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:39:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 06:39:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 06:39:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 110 states have internal predecessors, (124), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 06:39:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2023-11-23 06:39:30,852 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 77 [2023-11-23 06:39:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:39:30,853 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2023-11-23 06:39:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 50 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:39:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2023-11-23 06:39:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 06:39:30,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:39:30,854 INFO L195 NwaCegarLoop]: trace histogram [40, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:30,875 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 06:39:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:31,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:39:31,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:39:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1902824834, now seen corresponding path program 5 times [2023-11-23 06:39:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:39:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279644231] [2023-11-23 06:39:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:39:31,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:39:31,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:39:31,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945286656] [2023-11-23 06:39:31,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 06:39:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:39:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:39:31,188 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 06:39:31,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15