./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_destroy_secure_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_string_destroy_secure_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bc5ed5fb850d9a2c9d9a14514ffc7939afe81a277edfb59aefd3c5f66024eda8 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:09:03,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:09:03,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:09:03,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:09:03,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:09:03,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:09:03,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:09:03,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:09:03,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:09:03,384 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:09:03,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:09:03,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:09:03,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:09:03,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:09:03,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:09:03,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:09:03,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:09:03,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:09:03,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:09:03,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:09:03,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:09:03,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:09:03,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:09:03,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:09:03,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:09:03,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:09:03,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:09:03,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:09:03,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:09:03,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:09:03,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:09:03,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:09:03,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:09:03,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:09:03,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc5ed5fb850d9a2c9d9a14514ffc7939afe81a277edfb59aefd3c5f66024eda8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:09:03,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:09:03,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:09:03,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:09:03,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:09:03,652 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:09:03,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_destroy_secure_harness.i [2023-11-23 09:09:04,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:09:05,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:09:05,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_destroy_secure_harness.i [2023-11-23 09:09:05,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e31f262/0e06d68bbe684ed8924c9ce9c829acf8/FLAG504f6a2ad [2023-11-23 09:09:05,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2e31f262/0e06d68bbe684ed8924c9ce9c829acf8 [2023-11-23 09:09:05,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:09:05,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:09:05,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:09:05,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:09:05,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:09:05,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:05" (1/1) ... [2023-11-23 09:09:05,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf38463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:05, skipping insertion in model container [2023-11-23 09:09:05,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:05" (1/1) ... [2023-11-23 09:09:05,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:09:05,500 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_string_destroy_secure_harness.i[4499,4512] [2023-11-23 09:09:05,508 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_string_destroy_secure_harness.i[4559,4572] [2023-11-23 09:09:06,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,312 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,324 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:09:06,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:09:06,598 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:09:06,599 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:09:06,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:09:06,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:09:06,601 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:09:06,601 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:09:06,601 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:09:06,602 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:09:06,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:06,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:09:06,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:09:07,002 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_string_destroy_secure_harness.i[4499,4512] [2023-11-23 09:09:07,003 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_string_destroy_secure_harness.i[4559,4572] [2023-11-23 09:09:07,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,048 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,048 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,049 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,050 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,084 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:09:07,085 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:09:07,086 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:09:07,087 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:09:07,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:09:07,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:09:07,089 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:09:07,090 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:09:07,090 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:09:07,090 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:09:07,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 09:09:07,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:07,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 09:09:07,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:09:07,370 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,370 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,370 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,370 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,371 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,371 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,371 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,371 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,371 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,372 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,372 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,372 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,372 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,372 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,373 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,373 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,373 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,373 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,373 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,374 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:07,379 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:09:07,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07 WrapperNode [2023-11-23 09:09:07,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:09:07,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:09:07,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:09:07,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:09:07,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,567 INFO L138 Inliner]: procedures = 692, calls = 2777, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 807 [2023-11-23 09:09:07,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:09:07,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:09:07,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:09:07,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:09:07,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:09:07,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:09:07,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:09:07,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:09:07,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (1/1) ... [2023-11-23 09:09:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:09:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:09:07,674 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 09:09:07,677 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 09:09:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 09:09:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 09:09:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:09:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:09:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:09:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:09:07,724 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:09:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:09:07,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:09:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:09:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:09:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:09:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:09:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:09:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:09:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:09:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:09:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 09:09:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure aws_secure_zero [2023-11-23 09:09:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_secure_zero [2023-11-23 09:09:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 09:09:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 09:09:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 09:09:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 09:09:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-23 09:09:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-23 09:09:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:09:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:09:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:09:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:09:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:09:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:09:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 09:09:07,728 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 09:09:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:09:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:09:07,992 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:09:07,993 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:09:08,722 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:09:08,831 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:09:08,831 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 09:09:08,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:08 BoogieIcfgContainer [2023-11-23 09:09:08,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:09:08,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:09:08,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:09:08,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:09:08,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:05" (1/3) ... [2023-11-23 09:09:08,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:08, skipping insertion in model container [2023-11-23 09:09:08,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:07" (2/3) ... [2023-11-23 09:09:08,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:08, skipping insertion in model container [2023-11-23 09:09:08,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:08" (3/3) ... [2023-11-23 09:09:08,839 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_destroy_secure_harness.i [2023-11-23 09:09:08,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:09:08,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:09:08,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:09:08,891 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;@1a05e10a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:09:08,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:09:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 09:09:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 09:09:08,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:08,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:08,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:08,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:08,910 INFO L85 PathProgramCache]: Analyzing trace with hash 387361593, now seen corresponding path program 1 times [2023-11-23 09:09:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318273158] [2023-11-23 09:09:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:09:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:09:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:09:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:09:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:09:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:09:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 09:09:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318273158] [2023-11-23 09:09:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318273158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:09:09,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:09:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:09:09,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261034167] [2023-11-23 09:09:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:09:09,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:09:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:09:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:09:09,548 INFO L87 Difference]: Start difference. First operand has 87 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 09:09:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:09,836 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2023-11-23 09:09:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 09:09:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-11-23 09:09:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:09,846 INFO L225 Difference]: With dead ends: 174 [2023-11-23 09:09:09,846 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 09:09:09,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:09:09,854 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:09,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 79 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:09:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 09:09:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2023-11-23 09:09:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:09:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2023-11-23 09:09:09,899 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 55 [2023-11-23 09:09:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:09,900 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2023-11-23 09:09:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 09:09:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2023-11-23 09:09:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 09:09:09,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:09,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:09,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:09:09,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:09,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:09,905 INFO L85 PathProgramCache]: Analyzing trace with hash 695783089, now seen corresponding path program 1 times [2023-11-23 09:09:09,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:09,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772506783] [2023-11-23 09:09:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:09,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:09:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:09:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:09:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:09:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:09:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:09:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 09:09:10,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:10,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772506783] [2023-11-23 09:09:10,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772506783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:09:10,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:09:10,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 09:09:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042338535] [2023-11-23 09:09:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:09:10,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:09:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:10,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:09:10,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:09:10,836 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 09:09:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:11,228 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2023-11-23 09:09:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:09:11,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2023-11-23 09:09:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:11,230 INFO L225 Difference]: With dead ends: 105 [2023-11-23 09:09:11,230 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 09:09:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:09:11,231 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:11,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 302 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:09:11,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 09:09:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2023-11-23 09:09:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:09:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2023-11-23 09:09:11,251 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 55 [2023-11-23 09:09:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:11,252 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2023-11-23 09:09:11,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-23 09:09:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2023-11-23 09:09:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 09:09:11,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:11,259 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:11,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 09:09:11,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:11,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -509332798, now seen corresponding path program 1 times [2023-11-23 09:09:11,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140559250] [2023-11-23 09:09:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:09:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:09:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:09:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:09:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:09:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:09:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 09:09:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 09:09:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 09:09:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:09:12,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140559250] [2023-11-23 09:09:12,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140559250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:09:12,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:09:12,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 09:09:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344744996] [2023-11-23 09:09:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:09:12,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:09:12,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:09:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:09:12,200 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:09:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:12,614 INFO L93 Difference]: Finished difference Result 148 states and 174 transitions. [2023-11-23 09:09:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:09:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 82 [2023-11-23 09:09:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:12,615 INFO L225 Difference]: With dead ends: 148 [2023-11-23 09:09:12,615 INFO L226 Difference]: Without dead ends: 94 [2023-11-23 09:09:12,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-23 09:09:12,616 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 127 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:12,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 229 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:09:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-23 09:09:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-11-23 09:09:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:09:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2023-11-23 09:09:12,624 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 82 [2023-11-23 09:09:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:12,624 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2023-11-23 09:09:12,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:09:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2023-11-23 09:09:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 09:09:12,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:12,625 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:12,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 09:09:12,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:12,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 762927585, now seen corresponding path program 1 times [2023-11-23 09:09:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751621970] [2023-11-23 09:09:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:09:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:09:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:09:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:09:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:09:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:09:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:09:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 09:09:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 09:09:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:09:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 09:09:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751621970] [2023-11-23 09:09:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751621970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:09:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096477429] [2023-11-23 09:09:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:16,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:09:16,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:09:16,494 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 09:09:16,516 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 09:09:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:17,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 2649 conjuncts, 132 conjunts are in the unsatisfiable core [2023-11-23 09:09:17,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:09:17,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2023-11-23 09:09:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:09:17,327 INFO L349 Elim1Store]: treesize reduction 11, result has 54.2 percent of original size [2023-11-23 09:09:17,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 82 [2023-11-23 09:09:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:09:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:09:17,360 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:09:17,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 9 [2023-11-23 09:09:19,942 INFO L349 Elim1Store]: treesize reduction 176, result has 20.4 percent of original size [2023-11-23 09:09:19,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 142 treesize of output 136 [2023-11-23 09:09:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 09:09:20,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:09:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 09:09:21,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096477429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:09:21,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:09:21,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 20] total 59 [2023-11-23 09:09:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183619321] [2023-11-23 09:09:21,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:09:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-23 09:09:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-23 09:09:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=3212, Unknown=0, NotChecked=0, Total=3422 [2023-11-23 09:09:21,812 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 59 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (40), 7 states have call predecessors, (40), 14 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2023-11-23 09:09:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:26,699 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2023-11-23 09:09:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 09:09:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (40), 7 states have call predecessors, (40), 14 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 90 [2023-11-23 09:09:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:26,701 INFO L225 Difference]: With dead ends: 129 [2023-11-23 09:09:26,701 INFO L226 Difference]: Without dead ends: 94 [2023-11-23 09:09:26,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 163 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1925 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=555, Invalid=7635, Unknown=0, NotChecked=0, Total=8190 [2023-11-23 09:09:26,705 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 208 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:26,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 749 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-23 09:09:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-23 09:09:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2023-11-23 09:09:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 20 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:09:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2023-11-23 09:09:26,715 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 90 [2023-11-23 09:09:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:26,715 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2023-11-23 09:09:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 46 states have internal predecessors, (111), 22 states have call successors, (40), 7 states have call predecessors, (40), 14 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2023-11-23 09:09:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2023-11-23 09:09:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 09:09:26,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:26,717 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:26,738 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 09:09:26,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:09:26,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:26,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash -783514363, now seen corresponding path program 1 times [2023-11-23 09:09:26,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:26,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028797109] [2023-11-23 09:09:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:09:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:09:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:09:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:09:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:09:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:09:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:33,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:09:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 09:09:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 09:09:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:09:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 09:09:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028797109] [2023-11-23 09:09:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028797109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:09:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581639857] [2023-11-23 09:09:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:09:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:09:34,459 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 09:09:34,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 09:09:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:35,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 146 conjunts are in the unsatisfiable core [2023-11-23 09:09:35,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:09:35,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-11-23 09:09:35,293 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-23 09:09:35,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 106 [2023-11-23 09:09:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:09:35,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 22 [2023-11-23 09:09:45,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:09:45,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 53 [2023-11-23 09:09:46,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 09:10:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 10 refuted. 8 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 09:10:04,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581639857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:04,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:10:04,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29] total 56 [2023-11-23 09:10:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332417273] [2023-11-23 09:10:04,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-23 09:10:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-23 09:10:04,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3488, Unknown=8, NotChecked=0, Total=3660 [2023-11-23 09:10:04,528 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 56 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-23 09:10:20,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:27,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:29,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:35,171 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2023-11-23 09:10:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-23 09:10:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) Word has length 91 [2023-11-23 09:10:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:35,173 INFO L225 Difference]: With dead ends: 124 [2023-11-23 09:10:35,173 INFO L226 Difference]: Without dead ends: 95 [2023-11-23 09:10:35,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=545, Invalid=8556, Unknown=19, NotChecked=0, Total=9120 [2023-11-23 09:10:35,176 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 250 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 184 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:35,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 915 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 3732 Invalid, 4 Unknown, 0 Unchecked, 9.8s Time] [2023-11-23 09:10:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-23 09:10:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-23 09:10:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:10:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2023-11-23 09:10:35,187 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 91 [2023-11-23 09:10:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:35,188 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2023-11-23 09:10:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 43 states have (on average 2.0697674418604652) internal successors, (89), 42 states have internal predecessors, (89), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-23 09:10:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2023-11-23 09:10:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 09:10:35,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:35,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:35,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 09:10:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:35,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:35,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:35,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1478574495, now seen corresponding path program 2 times [2023-11-23 09:10:35,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:35,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482560874] [2023-11-23 09:10:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:35,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:10:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:10:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:10:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 09:10:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 09:10:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 09:10:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 09:10:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482560874] [2023-11-23 09:10:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482560874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:42,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831273723] [2023-11-23 09:10:42,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 09:10:42,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:42,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:42,795 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 09:10:42,797 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 09:10:43,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 09:10:43,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:10:43,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 145 conjunts are in the unsatisfiable core [2023-11-23 09:10:43,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:43,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-11-23 09:10:43,465 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-23 09:10:43,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 106 [2023-11-23 09:10:43,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:10:43,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 22 [2023-11-23 09:10:53,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 09:10:53,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 53 [2023-11-23 09:10:53,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 09:10:53,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 09:11:12,433 INFO L349 Elim1Store]: treesize reduction 96, result has 3.0 percent of original size [2023-11-23 09:11:12,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 19 [2023-11-23 09:11:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 20 proven. 12 refuted. 8 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 09:11:12,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:11:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831273723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:12,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:11:12,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 30] total 57 [2023-11-23 09:11:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409241533] [2023-11-23 09:11:12,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:11:12,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-23 09:11:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-23 09:11:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3611, Unknown=8, NotChecked=0, Total=3782 [2023-11-23 09:11:12,968 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 57 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-23 09:11:19,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:23,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:26,844 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2023-11-23 09:11:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 09:11:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) Word has length 92 [2023-11-23 09:11:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:26,846 INFO L225 Difference]: With dead ends: 131 [2023-11-23 09:11:26,846 INFO L226 Difference]: Without dead ends: 96 [2023-11-23 09:11:26,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 91 SyntacticMatches, 7 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=521, Invalid=9172, Unknown=9, NotChecked=0, Total=9702 [2023-11-23 09:11:26,848 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 226 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 161 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:26,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 784 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 3574 Invalid, 10 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 09:11:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-23 09:11:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2023-11-23 09:11:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 09:11:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2023-11-23 09:11:26,860 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 92 [2023-11-23 09:11:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:26,861 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2023-11-23 09:11:26,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 43 states have internal predecessors, (91), 17 states have call successors, (30), 7 states have call predecessors, (30), 15 states have return successors, (29), 24 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-23 09:11:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2023-11-23 09:11:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 09:11:26,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:26,862 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:26,880 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 09:11:27,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:27,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:27,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1550602107, now seen corresponding path program 3 times [2023-11-23 09:11:27,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:27,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111855319] [2023-11-23 09:11:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:27,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 09:11:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:11:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:11:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 09:11:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 09:11:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 09:11:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 09:11:33,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111855319] [2023-11-23 09:11:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111855319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287144250] [2023-11-23 09:11:33,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 09:11:33,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:33,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:33,169 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 09:11:33,169 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 09:11:33,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 09:11:33,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 09:11:33,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 176 conjunts are in the unsatisfiable core [2023-11-23 09:11:33,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:33,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2023-11-23 09:11:33,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:33,657 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 09:11:33,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:11:33,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-23 09:11:33,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:33,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:13:06,643 WARN L293 SmtUtils]: Spent 1.45m on a formula simplification. DAG size of input: 1350 DAG size of output: 862 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 09:13:06,644 INFO L349 Elim1Store]: treesize reduction 2612, result has 42.6 percent of original size [2023-11-23 09:13:06,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 30 select indices, 30 select index equivalence classes, 1 disjoint index pairs (out of 435 index pairs), introduced 44 new quantified variables, introduced 435 case distinctions, treesize of input 554 treesize of output 2301 Killed by 15