./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.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_byte_buf_clean_up_secure_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c4e8d47a47f19811d4fd0ca8cb17b6360c5e52ebc062972268cba6b6d5f830d3 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:10:06,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:10:06,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:10:06,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:10:06,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:10:06,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:10:06,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:10:06,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:10:06,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:10:06,615 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:10:06,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:10:06,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:10:06,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:10:06,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:10:06,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:10:06,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:10:06,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:10:06,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:10:06,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:10:06,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:10:06,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:10:06,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:10:06,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:10:06,621 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:10:06,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:10:06,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:10:06,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:10:06,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:10:06,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:10:06,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:10:06,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:10:06,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:10:06,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:10:06,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:10:06,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4e8d47a47f19811d4fd0ca8cb17b6360c5e52ebc062972268cba6b6d5f830d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:10:06,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:10:06,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:10:06,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:10:06,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:10:06,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:10:06,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2023-11-23 08:10:07,956 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:10:08,349 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:10:08,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2023-11-23 08:10:08,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ff1eefd/ca87b058b4054658943ed2dba7cb58ff/FLAGa9f296063 [2023-11-23 08:10:08,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ff1eefd/ca87b058b4054658943ed2dba7cb58ff [2023-11-23 08:10:08,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:10:08,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:10:08,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:10:08,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:10:08,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:10:08,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:08" (1/1) ... [2023-11-23 08:10:08,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635598b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:08, skipping insertion in model container [2023-11-23 08:10:08,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:08" (1/1) ... [2023-11-23 08:10:08,476 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:10:08,675 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_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2023-11-23 08:10:08,683 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_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2023-11-23 08:10:09,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,232 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,253 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,261 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,262 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,455 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:10:09,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:10:09,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:10:09,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:10:09,458 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:10:09,459 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:10:09,459 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:10:09,460 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:10:09,460 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:10:09,461 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:10:09,620 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,623 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:10:09,733 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:10:09,752 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2023-11-23 08:10:09,752 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2023-11-23 08:10:09,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,836 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:10:09,837 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:10:09,838 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:10:09,839 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:10:09,839 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:10:09,840 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:10:09,840 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:10:09,841 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:10:09,841 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:10:09,841 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:10:09,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8061] [2023-11-23 08:10:09,930 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,931 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:10:09,940 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8547-8558] [2023-11-23 08:10:09,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:10:10,114 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,114 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,114 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,115 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,115 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,115 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,115 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,115 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,116 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,117 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,117 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,117 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,117 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:10:10,123 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:10:10,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10 WrapperNode [2023-11-23 08:10:10,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:10:10,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:10:10,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:10:10,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:10:10,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,253 INFO L138 Inliner]: procedures = 690, calls = 2507, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 815 [2023-11-23 08:10:10,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:10:10,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:10:10,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:10:10,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:10:10,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:10:10,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:10:10,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:10:10,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:10:10,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (1/1) ... [2023-11-23 08:10:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:10:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:10,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:10:10,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:10:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:10:10,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:10:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:10:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:10:10,431 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:10:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:10:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:10:10,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:10:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2023-11-23 08:10:10,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2023-11-23 08:10:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:10:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:10:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:10:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:10:10,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:10:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:10:10,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:10:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 08:10:10,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 08:10:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:10:10,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:10:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:10:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:10:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:10:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:10:10,434 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:10:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:10:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:10:10,434 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:10:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:10:10,435 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:10:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:10:10,664 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:10:10,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:10:11,291 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:10:11,471 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:10:11,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:10:11,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:11 BoogieIcfgContainer [2023-11-23 08:10:11,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:10:11,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:10:11,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:10:11,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:10:11,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:10:08" (1/3) ... [2023-11-23 08:10:11,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2645c998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:10:11, skipping insertion in model container [2023-11-23 08:10:11,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:10" (2/3) ... [2023-11-23 08:10:11,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2645c998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:10:11, skipping insertion in model container [2023-11-23 08:10:11,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:11" (3/3) ... [2023-11-23 08:10:11,480 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness_negated.i [2023-11-23 08:10:11,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:10:11,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:10:11,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:10:11,548 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;@2acd3a63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:10:11,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:10:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 08:10:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:10:11,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:11,564 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:11,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 854131748, now seen corresponding path program 1 times [2023-11-23 08:10:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444685922] [2023-11-23 08:10:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:10:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:10:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:10:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:10:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:10:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:10:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444685922] [2023-11-23 08:10:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444685922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:12,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:10:12,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:10:12,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877105353] [2023-11-23 08:10:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:10:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:10:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:10:12,275 INFO L87 Difference]: Start difference. First operand has 103 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 08:10:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:12,803 INFO L93 Difference]: Finished difference Result 206 states and 293 transitions. [2023-11-23 08:10:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:10:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2023-11-23 08:10:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:12,814 INFO L225 Difference]: With dead ends: 206 [2023-11-23 08:10:12,814 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 08:10:12,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:10:12,828 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 61 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:12,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 76 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:10:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 08:10:12,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2023-11-23 08:10:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 63 states have internal predecessors, (77), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-23 08:10:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2023-11-23 08:10:12,875 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 68 [2023-11-23 08:10:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:12,876 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2023-11-23 08:10:12,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 08:10:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2023-11-23 08:10:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:10:12,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:12,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:10:12,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1366555302, now seen corresponding path program 1 times [2023-11-23 08:10:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098071106] [2023-11-23 08:10:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:10:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:10:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:10:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:10:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:10:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:10:13,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098071106] [2023-11-23 08:10:13,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098071106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17008038] [2023-11-23 08:10:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:13,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:13,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:10:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:13,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:10:13,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:10:14,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:10:14,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17008038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:14,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:10:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 08:10:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818819810] [2023-11-23 08:10:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:14,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:10:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:10:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:10:14,057 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 08:10:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:14,474 INFO L93 Difference]: Finished difference Result 185 states and 248 transitions. [2023-11-23 08:10:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:10:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2023-11-23 08:10:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:14,476 INFO L225 Difference]: With dead ends: 185 [2023-11-23 08:10:14,476 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 08:10:14,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:10:14,477 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 34 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:14,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 370 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:10:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 08:10:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 08:10:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2023-11-23 08:10:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2023-11-23 08:10:14,487 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 68 [2023-11-23 08:10:14,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:14,488 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2023-11-23 08:10:14,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 08:10:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2023-11-23 08:10:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 08:10:14,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:14,489 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:14,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:10:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:14,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:14,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 325707185, now seen corresponding path program 1 times [2023-11-23 08:10:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514229579] [2023-11-23 08:10:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:10:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:10:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:10:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:10:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 08:10:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514229579] [2023-11-23 08:10:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514229579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:15,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664540975] [2023-11-23 08:10:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:15,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:15,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:10:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:15,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:10:15,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 08:10:15,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:10:15,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664540975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:15,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:10:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-23 08:10:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713852112] [2023-11-23 08:10:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:10:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:10:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:10:15,780 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 08:10:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:16,321 INFO L93 Difference]: Finished difference Result 184 states and 247 transitions. [2023-11-23 08:10:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:10:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 74 [2023-11-23 08:10:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:16,322 INFO L225 Difference]: With dead ends: 184 [2023-11-23 08:10:16,322 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 08:10:16,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:10:16,323 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 43 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 467 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:10:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 08:10:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 08:10:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-11-23 08:10:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2023-11-23 08:10:16,331 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 74 [2023-11-23 08:10:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:16,332 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2023-11-23 08:10:16,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 08:10:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2023-11-23 08:10:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:10:16,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:16,333 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:16,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:10:16,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:10:16,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:16,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:16,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1065040454, now seen corresponding path program 2 times [2023-11-23 08:10:16,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:16,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175705247] [2023-11-23 08:10:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:10:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:10:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:10:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 08:10:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175705247] [2023-11-23 08:10:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175705247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21448681] [2023-11-23 08:10:17,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:10:17,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:17,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:17,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:17,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:10:17,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:10:17,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:10:17,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:10:17,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:10:17,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:10:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21448681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:10:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-23 08:10:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274036306] [2023-11-23 08:10:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:10:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:10:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:10:17,624 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:10:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:18,278 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2023-11-23 08:10:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:10:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 80 [2023-11-23 08:10:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:18,280 INFO L225 Difference]: With dead ends: 111 [2023-11-23 08:10:18,280 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 08:10:18,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:10:18,281 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 5 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:18,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 687 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:10:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 08:10:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2023-11-23 08:10:18,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 68 states have internal predecessors, (81), 29 states have call successors, (29), 11 states have call predecessors, (29), 12 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-23 08:10:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 141 transitions. [2023-11-23 08:10:18,287 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 141 transitions. Word has length 80 [2023-11-23 08:10:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:18,290 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 141 transitions. [2023-11-23 08:10:18,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 08:10:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 141 transitions. [2023-11-23 08:10:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 08:10:18,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:18,293 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:18,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:10:18,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:18,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:18,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 145560667, now seen corresponding path program 3 times [2023-11-23 08:10:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102641355] [2023-11-23 08:10:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:10:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:10:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:10:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:10:19,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102641355] [2023-11-23 08:10:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102641355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154420282] [2023-11-23 08:10:19,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:10:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:19,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:10:19,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 08:10:19,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:10:19,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 2348 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:10:19,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 08:10:19,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:10:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:10:20,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154420282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:10:20,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:10:20,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 7] total 16 [2023-11-23 08:10:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705571002] [2023-11-23 08:10:20,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:10:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:10:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:10:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:10:20,006 INFO L87 Difference]: Start difference. First operand 108 states and 141 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 6 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-23 08:10:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:21,558 INFO L93 Difference]: Finished difference Result 188 states and 246 transitions. [2023-11-23 08:10:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:10:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 6 states have call predecessors, (21), 7 states have call successors, (21) Word has length 86 [2023-11-23 08:10:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:21,560 INFO L225 Difference]: With dead ends: 188 [2023-11-23 08:10:21,560 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 08:10:21,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:10:21,561 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 168 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:21,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 377 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 08:10:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 08:10:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-11-23 08:10:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 66 states have internal predecessors, (80), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2023-11-23 08:10:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2023-11-23 08:10:21,569 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 86 [2023-11-23 08:10:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:21,569 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2023-11-23 08:10:21,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (21), 6 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-23 08:10:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2023-11-23 08:10:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:10:21,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:21,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:21,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:10:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:21,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:21,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1492694170, now seen corresponding path program 1 times [2023-11-23 08:10:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242588323] [2023-11-23 08:10:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:21,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:10:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:10:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:10:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:10:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:10:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:10:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 08:10:23,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242588323] [2023-11-23 08:10:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242588323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842106429] [2023-11-23 08:10:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:23,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:23,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:23,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:10:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:23,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 08:10:23,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:23,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:10:24,188 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 26 treesize of output 14 [2023-11-23 08:10:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 08:10:24,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:10:24,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842106429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:24,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:10:24,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 24 [2023-11-23 08:10:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940218532] [2023-11-23 08:10:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:24,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:10:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:24,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:10:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:10:24,362 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 08:10:27,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:29,431 WARN L539 Checker$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 08:10:31,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:33,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:35,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:37,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:39,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:41,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:44,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:46,109 WARN L539 Checker$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 08:10:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:10:46,138 INFO L93 Difference]: Finished difference Result 254 states and 331 transitions. [2023-11-23 08:10:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:10:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 92 [2023-11-23 08:10:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:10:46,140 INFO L225 Difference]: With dead ends: 254 [2023-11-23 08:10:46,140 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 08:10:46,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:10:46,141 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 107 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 16 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:10:46,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 998 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 729 Invalid, 10 Unknown, 0 Unchecked, 21.7s Time] [2023-11-23 08:10:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 08:10:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 154. [2023-11-23 08:10:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 103 states have internal predecessors, (127), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-23 08:10:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2023-11-23 08:10:46,153 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 92 [2023-11-23 08:10:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:10:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2023-11-23 08:10:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 08:10:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2023-11-23 08:10:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 08:10:46,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:10:46,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:10:46,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:10:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:46,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:10:46,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:10:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1108184550, now seen corresponding path program 1 times [2023-11-23 08:10:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:10:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852731001] [2023-11-23 08:10:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:10:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:10:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:10:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:10:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:10:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:10:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:10:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:10:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:10:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:10:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:10:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 08:10:47,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:10:47,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852731001] [2023-11-23 08:10:47,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852731001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:10:47,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558145736] [2023-11-23 08:10:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:10:47,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:10:47,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:10:47,188 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:10:47,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:10:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:10:47,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 08:10:47,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:10:47,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:10:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 08:10:48,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:10:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558145736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:10:48,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:10:48,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2023-11-23 08:10:48,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226000409] [2023-11-23 08:10:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:10:48,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:10:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:10:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:10:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:10:48,110 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-23 08:10:50,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:52,754 WARN L539 Checker$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 08:10:54,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:56,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:58,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:00,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:03,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:05,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:07,064 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 08:11:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:11:07,074 INFO L93 Difference]: Finished difference Result 219 states and 277 transitions. [2023-11-23 08:11:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:11:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 108 [2023-11-23 08:11:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:11:07,076 INFO L225 Difference]: With dead ends: 219 [2023-11-23 08:11:07,076 INFO L226 Difference]: Without dead ends: 133 [2023-11-23 08:11:07,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:11:07,077 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 40 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 9 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:11:07,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 719 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 352 Invalid, 9 Unknown, 0 Unchecked, 18.9s Time] [2023-11-23 08:11:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-23 08:11:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2023-11-23 08:11:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 84 states have internal predecessors, (102), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2023-11-23 08:11:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 158 transitions. [2023-11-23 08:11:07,085 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 158 transitions. Word has length 108 [2023-11-23 08:11:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:11:07,086 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 158 transitions. [2023-11-23 08:11:07,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 6 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-23 08:11:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 158 transitions. [2023-11-23 08:11:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:11:07,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:11:07,087 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:11:07,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 08:11:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:07,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:11:07,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:11:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1370818078, now seen corresponding path program 1 times [2023-11-23 08:11:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:11:07,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418426913] [2023-11-23 08:11:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:11:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:11:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:11:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:11:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:11:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:11:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:11:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:11:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:11:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:11:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:11:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:11:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:11:08,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418426913] [2023-11-23 08:11:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418426913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008892454] [2023-11-23 08:11:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:08,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:08,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:11:08,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:11:08,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:11:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:08,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-23 08:11:08,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:11:08,491 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 13 treesize of output 9 [2023-11-23 08:11:08,998 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:11:08,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-23 08:11:09,120 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 26 treesize of output 14 [2023-11-23 08:11:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 08:11:09,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:11:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008892454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:09,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:11:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21] total 29 [2023-11-23 08:11:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800629594] [2023-11-23 08:11:09,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:11:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 08:11:09,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:11:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 08:11:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 08:11:09,536 INFO L87 Difference]: Start difference. First operand 125 states and 158 transitions. Second operand has 29 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:11:14,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:17,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:19,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:25,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:27,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:29,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:31,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:34,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:36,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:39,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:41,180 WARN L539 Checker$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 08:11:43,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:45,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:47,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:49,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:51,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:11:53,801 WARN L539 Checker$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 08:11:55,855 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 08:11:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:11:55,995 INFO L93 Difference]: Finished difference Result 641 states and 854 transitions. [2023-11-23 08:11:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-23 08:11:55,996 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 119 [2023-11-23 08:11:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:11:55,998 INFO L225 Difference]: With dead ends: 641 [2023-11-23 08:11:55,998 INFO L226 Difference]: Without dead ends: 535 [2023-11-23 08:11:56,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 162 SyntacticMatches, 10 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3255 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1933, Invalid=10277, Unknown=0, NotChecked=0, Total=12210 [2023-11-23 08:11:56,002 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 905 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 4181 mSolverCounterSat, 282 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 4481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 4181 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:11:56,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 614 Invalid, 4481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 4181 Invalid, 18 Unknown, 0 Unchecked, 42.6s Time] [2023-11-23 08:11:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-23 08:11:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 347. [2023-11-23 08:11:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 265 states have (on average 1.2754716981132075) internal successors, (338), 270 states have internal predecessors, (338), 49 states have call successors, (49), 26 states have call predecessors, (49), 32 states have return successors, (68), 50 states have call predecessors, (68), 48 states have call successors, (68) [2023-11-23 08:11:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 455 transitions. [2023-11-23 08:11:56,023 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 455 transitions. Word has length 119 [2023-11-23 08:11:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:11:56,023 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 455 transitions. [2023-11-23 08:11:56,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.384615384615385) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:11:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 455 transitions. [2023-11-23 08:11:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 08:11:56,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:11:56,025 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:11:56,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 08:11:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:56,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:11:56,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:11:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash 91705758, now seen corresponding path program 1 times [2023-11-23 08:11:56,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:11:56,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784297114] [2023-11-23 08:11:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:11:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:11:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:11:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:11:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:11:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:11:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:11:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:11:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:11:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:11:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:11:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 08:11:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:11:57,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:11:57,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784297114] [2023-11-23 08:11:57,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784297114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:57,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479135518] [2023-11-23 08:11:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:11:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:11:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:11:57,035 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:11:57,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:11:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:11:57,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 2649 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 08:11:57,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:11:57,487 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 13 treesize of output 9 [2023-11-23 08:11:57,888 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 08:11:57,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-23 08:11:58,210 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 26 treesize of output 14 [2023-11-23 08:11:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 46 proven. 68 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 08:11:58,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:11:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479135518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:11:58,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:11:58,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 30 [2023-11-23 08:11:58,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631804933] [2023-11-23 08:11:58,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:11:58,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 08:11:58,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:11:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 08:11:58,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 08:11:58,653 INFO L87 Difference]: Start difference. First operand 347 states and 455 transitions. Second operand has 30 states, 26 states have (on average 4.615384615384615) internal successors, (120), 25 states have internal predecessors, (120), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:12:03,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:06,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:08,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:12,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:14,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:16,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:19,567 WARN L539 Checker$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 08:12:21,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:23,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:25,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:27,990 WARN L539 Checker$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 08:12:29,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:32,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:34,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:36,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:38,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:12:40,470 WARN L539 Checker$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 08:12:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:40,480 INFO L93 Difference]: Finished difference Result 987 states and 1284 transitions. [2023-11-23 08:12:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-23 08:12:40,480 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 4.615384615384615) internal successors, (120), 25 states have internal predecessors, (120), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 119 [2023-11-23 08:12:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:40,484 INFO L225 Difference]: With dead ends: 987 [2023-11-23 08:12:40,484 INFO L226 Difference]: Without dead ends: 659 [2023-11-23 08:12:40,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 146 SyntacticMatches, 10 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1341, Invalid=9165, Unknown=0, NotChecked=0, Total=10506 [2023-11-23 08:12:40,487 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 772 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 3640 mSolverCounterSat, 341 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 3640 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:40,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 554 Invalid, 3998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 3640 Invalid, 17 Unknown, 0 Unchecked, 39.7s Time] [2023-11-23 08:12:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-23 08:12:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 543. [2023-11-23 08:12:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 427 states have (on average 1.288056206088993) internal successors, (550), 435 states have internal predecessors, (550), 66 states have call successors, (66), 39 states have call predecessors, (66), 49 states have return successors, (99), 68 states have call predecessors, (99), 65 states have call successors, (99) [2023-11-23 08:12:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 715 transitions. [2023-11-23 08:12:40,560 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 715 transitions. Word has length 119 [2023-11-23 08:12:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:40,560 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 715 transitions. [2023-11-23 08:12:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 4.615384615384615) internal successors, (120), 25 states have internal predecessors, (120), 9 states have call successors, (29), 8 states have call predecessors, (29), 9 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:12:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 715 transitions. [2023-11-23 08:12:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:12:40,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:40,562 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-23 08:12:40,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 08:12:40,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:40,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -828497349, now seen corresponding path program 1 times [2023-11-23 08:12:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:40,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360370097] [2023-11-23 08:12:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:40,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:12:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:12:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:12:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:12:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:12:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360370097] [2023-11-23 08:12:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360370097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432691387] [2023-11-23 08:12:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:41,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:12:41,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:12:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:41,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 2649 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:12:41,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 08:12:41,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432691387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 08:12:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060204873] [2023-11-23 08:12:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:41,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:12:41,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:12:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:12:41,491 INFO L87 Difference]: Start difference. First operand 543 states and 715 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:12:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:41,875 INFO L93 Difference]: Finished difference Result 1181 states and 1573 transitions. [2023-11-23 08:12:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:12:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-11-23 08:12:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:41,878 INFO L225 Difference]: With dead ends: 1181 [2023-11-23 08:12:41,878 INFO L226 Difference]: Without dead ends: 657 [2023-11-23 08:12:41,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:12:41,880 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 9 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:41,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 341 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:12:41,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-23 08:12:41,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 573. [2023-11-23 08:12:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 457 states have (on average 1.2691466083150984) internal successors, (580), 465 states have internal predecessors, (580), 66 states have call successors, (66), 39 states have call predecessors, (66), 49 states have return successors, (99), 68 states have call predecessors, (99), 65 states have call successors, (99) [2023-11-23 08:12:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 745 transitions. [2023-11-23 08:12:41,905 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 745 transitions. Word has length 121 [2023-11-23 08:12:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:41,905 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 745 transitions. [2023-11-23 08:12:41,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:12:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 745 transitions. [2023-11-23 08:12:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:12:41,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:41,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-23 08:12:41,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:42,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:12:42,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:42,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 55353463, now seen corresponding path program 1 times [2023-11-23 08:12:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471831026] [2023-11-23 08:12:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:12:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:12:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:12:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:12:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 08:12:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471831026] [2023-11-23 08:12:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471831026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42719145] [2023-11-23 08:12:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:42,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:42,349 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:12:42,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:12:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:42,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:12:42,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 08:12:42,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42719145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 08:12:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419099678] [2023-11-23 08:12:42,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:42,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:12:42,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:12:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:12:42,773 INFO L87 Difference]: Start difference. First operand 573 states and 745 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:12:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:43,022 INFO L93 Difference]: Finished difference Result 1087 states and 1395 transitions. [2023-11-23 08:12:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:12:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-11-23 08:12:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:43,025 INFO L225 Difference]: With dead ends: 1087 [2023-11-23 08:12:43,025 INFO L226 Difference]: Without dead ends: 590 [2023-11-23 08:12:43,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:12:43,027 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 28 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:43,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 357 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:12:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-11-23 08:12:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 498. [2023-11-23 08:12:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 393 states have (on average 1.2315521628498727) internal successors, (484), 400 states have internal predecessors, (484), 57 states have call successors, (57), 37 states have call predecessors, (57), 47 states have return successors, (81), 60 states have call predecessors, (81), 56 states have call successors, (81) [2023-11-23 08:12:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 622 transitions. [2023-11-23 08:12:43,066 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 622 transitions. Word has length 121 [2023-11-23 08:12:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:43,066 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 622 transitions. [2023-11-23 08:12:43,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:12:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 622 transitions. [2023-11-23 08:12:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:12:43,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:43,069 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-23 08:12:43,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:12:43,287 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:43,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1563621451, now seen corresponding path program 2 times [2023-11-23 08:12:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074400255] [2023-11-23 08:12:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:12:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:12:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:12:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:12:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 08:12:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:12:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074400255] [2023-11-23 08:12:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074400255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:12:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45642452] [2023-11-23 08:12:43,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:12:43,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:12:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:12:43,917 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:12:43,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:12:44,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:12:44,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:12:44,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 08:12:44,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:12:44,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-11-23 08:12:44,452 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 37 treesize of output 25 [2023-11-23 08:12:46,462 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_24| Int) (|v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_24| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_24|) (+ |v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_24| 8)) 0))) (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_24| Int) (|v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_24| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_24|) (+ |v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_24| 8)))))) is different from true [2023-11-23 08:12:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 08:12:46,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:12:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45642452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:12:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:12:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2023-11-23 08:12:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819998919] [2023-11-23 08:12:46,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:12:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:12:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:12:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:12:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=341, Unknown=1, NotChecked=36, Total=420 [2023-11-23 08:12:46,791 INFO L87 Difference]: Start difference. First operand 498 states and 622 transitions. Second operand has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:12:50,277 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 08:12:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:12:59,505 INFO L93 Difference]: Finished difference Result 698 states and 855 transitions. [2023-11-23 08:12:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:12:59,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 121 [2023-11-23 08:12:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:12:59,508 INFO L225 Difference]: With dead ends: 698 [2023-11-23 08:12:59,508 INFO L226 Difference]: Without dead ends: 588 [2023-11-23 08:12:59,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=101, Invalid=710, Unknown=5, NotChecked=54, Total=870 [2023-11-23 08:12:59,508 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 95 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:12:59,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 345 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1038 Invalid, 1 Unknown, 177 Unchecked, 4.4s Time] [2023-11-23 08:12:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-23 08:12:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 387. [2023-11-23 08:12:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 301 states have (on average 1.2259136212624584) internal successors, (369), 305 states have internal predecessors, (369), 49 states have call successors, (49), 31 states have call predecessors, (49), 36 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2023-11-23 08:12:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 479 transitions. [2023-11-23 08:12:59,525 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 479 transitions. Word has length 121 [2023-11-23 08:12:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:12:59,526 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 479 transitions. [2023-11-23 08:12:59,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 08:12:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 479 transitions. [2023-11-23 08:12:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:12:59,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:12:59,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-23 08:12:59,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:12:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:12:59,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:12:59,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:12:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1956648461, now seen corresponding path program 1 times [2023-11-23 08:12:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:12:59,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067173128] [2023-11-23 08:12:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:12:59,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:12:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:12:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:12:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:12:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:12:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:12:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:12:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:12:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:12:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:12:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:12:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:12:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 08:12:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:13:00,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:13:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067173128] [2023-11-23 08:13:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067173128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:13:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:13:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:13:00,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628464026] [2023-11-23 08:13:00,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:13:00,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:13:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:13:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:13:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:13:00,014 INFO L87 Difference]: Start difference. First operand 387 states and 479 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:13:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:13:00,905 INFO L93 Difference]: Finished difference Result 589 states and 727 transitions. [2023-11-23 08:13:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:13:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2023-11-23 08:13:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:13:00,907 INFO L225 Difference]: With dead ends: 589 [2023-11-23 08:13:00,907 INFO L226 Difference]: Without dead ends: 445 [2023-11-23 08:13:00,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:13:00,908 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 134 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:13:00,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 150 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:13:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-23 08:13:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 365. [2023-11-23 08:13:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 281 states have (on average 1.206405693950178) internal successors, (339), 285 states have internal predecessors, (339), 48 states have call successors, (48), 30 states have call predecessors, (48), 35 states have return successors, (60), 49 states have call predecessors, (60), 47 states have call successors, (60) [2023-11-23 08:13:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 447 transitions. [2023-11-23 08:13:00,923 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 447 transitions. Word has length 121 [2023-11-23 08:13:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:13:00,923 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 447 transitions. [2023-11-23 08:13:00,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:13:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 447 transitions. [2023-11-23 08:13:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 08:13:00,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:13:00,925 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 08:13:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 08:13:00,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:13:00,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:13:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2104575430, now seen corresponding path program 1 times [2023-11-23 08:13:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:13:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276591639] [2023-11-23 08:13:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:13:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:13:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:13:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:13:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:13:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:13:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:13:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:13:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:13:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:13:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:13:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:13:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:13:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:13:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276591639] [2023-11-23 08:13:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276591639] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:13:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592091411] [2023-11-23 08:13:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:13:01,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:13:01,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:13:01,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:13:01,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:13:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:13:02,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-23 08:13:02,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:13:02,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:13:04,129 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_29|) (+ |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset_BEFORE_CALL_19| 8)))) (and (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_29|) (not (= 0 .cse0))))) is different from true [2023-11-23 08:13:06,256 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_30| Int) (|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset_BEFORE_CALL_20| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_30|) (+ |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.offset_BEFORE_CALL_20| 8)))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_30|)))) is different from true [2023-11-23 08:13:08,337 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_14| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_14|) (+ |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset_BEFORE_CALL_15| 8)))) (and (not (= .cse0 0)) (<= (+ .cse0 2) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_14|)))) is different from true [2023-11-23 08:13:10,440 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_15| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_15|) (+ |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.offset_BEFORE_CALL_16| 8)))) (and (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_15|)))) is different from true [2023-11-23 08:13:12,530 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_25| Int) (|v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_25| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_25|) (+ |v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_25| 8)))) (and (<= (+ .cse0 2) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_25|) (not (= .cse0 0))))) is different from true [2023-11-23 08:13:14,611 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26| Int) (|v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_26| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26|) (+ |v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_26| 8)))) (and (<= (+ 2 .cse0) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26|) (not (= .cse0 0))))) is different from true [2023-11-23 08:13:14,770 WARN L876 $PredicateComparison]: unable to prove that (exists ((memset_impl_~sp~0.base Int)) (and (<= memset_impl_~sp~0.base |c_memset_impl_#in~s.base|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| memset_impl_~sp~0.base (select |c_#memory_$Pointer$.base| memset_impl_~sp~0.base))))) is different from true [2023-11-23 08:13:14,800 WARN L876 $PredicateComparison]: unable to prove that (exists ((memset_impl_~sp~0.base Int)) (and (<= memset_impl_~sp~0.base |c_my_memset_#in~s.base|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| memset_impl_~sp~0.base (select |c_#memory_$Pointer$.base| memset_impl_~sp~0.base))))) is different from true [2023-11-23 08:13:14,815 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2023-11-23 08:13:14,815 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 1 case distinctions, treesize of input 39 treesize of output 30 [2023-11-23 08:13:14,831 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 37 treesize of output 19 [2023-11-23 08:13:16,840 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_28| Int) (|v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_28| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_28|) (+ |v_aws_byte_buf_secure_zero_~buf#1.offset_BEFORE_CALL_28| 8)))) (and (<= (+ .cse0 2) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_28|) (not (= .cse0 0))))) is different from true [2023-11-23 08:13:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 24 proven. 0 refuted. 12 times theorem prover too weak. 12 trivial. 85 not checked. [2023-11-23 08:13:19,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:13:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592091411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:13:23,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:13:23,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28] total 37 [2023-11-23 08:13:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529052598] [2023-11-23 08:13:23,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:13:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 08:13:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:13:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 08:13:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1035, Unknown=18, NotChecked=648, Total=1806 [2023-11-23 08:13:23,409 INFO L87 Difference]: Start difference. First operand 365 states and 447 transitions. Second operand has 37 states, 32 states have (on average 4.28125) internal successors, (137), 30 states have internal predecessors, (137), 11 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 08:14:29,964 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 08:14:31,980 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] Killed by 15