./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_u8_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_write_u8_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 d606d360294655c7e1ba590e0e84d74c5fc0432dff05680b9921c20a3bcfc46d --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:23:36,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:23:36,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:23:36,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:23:36,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:23:36,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:23:36,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:23:36,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:23:36,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:23:36,330 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:23:36,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:23:36,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:23:36,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:23:36,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:23:36,332 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:23:36,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:23:36,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:23:36,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:23:36,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:23:36,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:23:36,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:23:36,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:23:36,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:23:36,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:23:36,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:23:36,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:23:36,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:23:36,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:23:36,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:23:36,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:23:36,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:23:36,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:23:36,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:23:36,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:23:36,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d606d360294655c7e1ba590e0e84d74c5fc0432dff05680b9921c20a3bcfc46d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:23:36,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:23:36,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:23:36,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:23:36,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:23:36,613 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:23:36,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2023-11-23 08:23:37,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:23:38,290 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:23:38,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2023-11-23 08:23:38,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f561ddd/436318b8300e463a812ae597435ce3b9/FLAG9e48c82ce [2023-11-23 08:23:38,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f561ddd/436318b8300e463a812ae597435ce3b9 [2023-11-23 08:23:38,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:23:38,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:23:38,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:23:38,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:23:38,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:23:38,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:23:38" (1/1) ... [2023-11-23 08:23:38,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b677e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:38, skipping insertion in model container [2023-11-23 08:23:38,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:23:38" (1/1) ... [2023-11-23 08:23:38,447 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:23:38,730 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_write_u8_harness_negated.i[4495,4508] [2023-11-23 08:23:38,737 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_write_u8_harness_negated.i[4555,4568] [2023-11-23 08:23:39,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,652 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:23:39,653 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:23:39,654 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:23:39,655 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:23:39,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:23:39,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:23:39,657 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:23:39,659 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:23:39,659 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:23:39,661 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:23:39,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:39,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:23:39,982 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:23:39,997 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_write_u8_harness_negated.i[4495,4508] [2023-11-23 08:23:39,998 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_write_u8_harness_negated.i[4555,4568] [2023-11-23 08:23:40,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,021 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,021 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,028 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,029 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,057 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:23:40,057 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:23:40,058 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:23:40,058 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:23:40,059 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:23:40,059 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:23:40,059 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:23:40,060 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:23:40,060 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:23:40,065 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:23:40,112 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2023-11-23 08:23:40,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,114 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:23:40,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2023-11-23 08:23:40,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:23:40,310 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,310 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,311 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,311 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,311 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,311 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,311 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,312 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,313 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,313 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,313 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,313 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,313 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:23:40,320 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:23:40,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40 WrapperNode [2023-11-23 08:23:40,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:23:40,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:23:40,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:23:40,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:23:40,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,493 INFO L138 Inliner]: procedures = 690, calls = 2622, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 855 [2023-11-23 08:23:40,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:23:40,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:23:40,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:23:40,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:23:40,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:23:40,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:23:40,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:23:40,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:23:40,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (1/1) ... [2023-11-23 08:23:40,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:23:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:40,657 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 08:23:40,667 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 08:23:40,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:23:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:23:40,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:23:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:23:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:23:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:23:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:23:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:23:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:23:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:23:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:23:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:23:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:23:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:23:40,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:23:40,710 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:23:40,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:23:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:23:40,710 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:23:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:23:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:23:40,993 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:23:40,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:23:41,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:23:41,717 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:23:41,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:23:41,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:23:41 BoogieIcfgContainer [2023-11-23 08:23:41,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:23:41,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:23:41,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:23:41,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:23:41,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:23:38" (1/3) ... [2023-11-23 08:23:41,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4081cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:23:41, skipping insertion in model container [2023-11-23 08:23:41,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:40" (2/3) ... [2023-11-23 08:23:41,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4081cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:23:41, skipping insertion in model container [2023-11-23 08:23:41,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:23:41" (3/3) ... [2023-11-23 08:23:41,724 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness_negated.i [2023-11-23 08:23:41,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:23:41,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:23:41,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:23:41,784 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;@157ef548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:23:41,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:23:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 08:23:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 08:23:41,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:41,803 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:23:41,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:41,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 670552078, now seen corresponding path program 1 times [2023-11-23 08:23:41,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:41,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220802665] [2023-11-23 08:23:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:41,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:23:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:23:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:23:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:23:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:23:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:23:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:23:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:23:42,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220802665] [2023-11-23 08:23:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220802665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:42,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:23:42,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:23:42,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919258071] [2023-11-23 08:23:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:23:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:23:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:23:42,489 INFO L87 Difference]: Start difference. First operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:23:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:43,021 INFO L93 Difference]: Finished difference Result 230 states and 339 transitions. [2023-11-23 08:23:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:23:43,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2023-11-23 08:23:43,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:43,029 INFO L225 Difference]: With dead ends: 230 [2023-11-23 08:23:43,029 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 08:23:43,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 08:23:43,035 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 69 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 91 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:23:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 08:23:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 08:23:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:23:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2023-11-23 08:23:43,070 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 76 [2023-11-23 08:23:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:43,070 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2023-11-23 08:23:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:23:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2023-11-23 08:23:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 08:23:43,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:43,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:23:43,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:23:43,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:43,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash -197932782, now seen corresponding path program 1 times [2023-11-23 08:23:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449681594] [2023-11-23 08:23:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:43,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:23:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:23:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:23:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:23:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:23:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:23:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:23:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:23:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:43,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449681594] [2023-11-23 08:23:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449681594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:43,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970299985] [2023-11-23 08:23:43,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:43,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:43,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:43,593 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 08:23:43,609 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 08:23:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:44,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:23:44,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:23:44,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970299985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:44,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 08:23:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694502001] [2023-11-23 08:23:44,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:44,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:23:44,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:23:44,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:23:44,237 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:23:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:44,687 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2023-11-23 08:23:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:23:44,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2023-11-23 08:23:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:44,692 INFO L225 Difference]: With dead ends: 211 [2023-11-23 08:23:44,692 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 08:23:44,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 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 08:23:44,699 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 42 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:44,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 448 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:23:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 08:23:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 08:23:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2023-11-23 08:23:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2023-11-23 08:23:44,724 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 76 [2023-11-23 08:23:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:44,724 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2023-11-23 08:23:44,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:23:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2023-11-23 08:23:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 08:23:44,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:44,732 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:23:44,759 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 08:23:44,960 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 08:23:44,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:44,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1012394947, now seen corresponding path program 1 times [2023-11-23 08:23:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264381384] [2023-11-23 08:23:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:23:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:23:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:23:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:23:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:23:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:23:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:23:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:23:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264381384] [2023-11-23 08:23:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264381384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989112260] [2023-11-23 08:23:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:45,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:45,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:45,529 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 08:23:45,539 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 08:23:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:45,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:23:45,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 08:23:46,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:46,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989112260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:46,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:46,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 08:23:46,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347919802] [2023-11-23 08:23:46,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:46,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:23:46,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:23:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:23:46,066 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:23:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:46,477 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2023-11-23 08:23:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:23:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2023-11-23 08:23:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:46,479 INFO L225 Difference]: With dead ends: 206 [2023-11-23 08:23:46,479 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 08:23:46,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:23:46,483 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 41 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:46,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 577 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:23:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 08:23:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 08:23:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-23 08:23:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2023-11-23 08:23:46,497 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 82 [2023-11-23 08:23:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:46,499 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2023-11-23 08:23:46,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 08:23:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2023-11-23 08:23:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 08:23:46,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:46,502 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2023-11-23 08:23:46,519 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 08:23:46,717 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 08:23:46,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:46,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1319536206, now seen corresponding path program 2 times [2023-11-23 08:23:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:46,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444016149] [2023-11-23 08:23:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:46,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:23:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:23:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:23:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:23:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:23:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:23:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:23:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:23:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:47,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444016149] [2023-11-23 08:23:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444016149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:47,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488209289] [2023-11-23 08:23:47,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:23:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:47,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:47,388 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 08:23:47,433 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 08:23:47,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:23:47,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:23:47,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 2270 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 08:23:47,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 08:23:47,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488209289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:47,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:47,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-23 08:23:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442433663] [2023-11-23 08:23:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:47,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:23:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:23:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:23:47,921 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:23:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:48,890 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2023-11-23 08:23:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:23:48,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2023-11-23 08:23:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:48,892 INFO L225 Difference]: With dead ends: 124 [2023-11-23 08:23:48,892 INFO L226 Difference]: Without dead ends: 122 [2023-11-23 08:23:48,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:23:48,893 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 5 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:48,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 819 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:23:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-23 08:23:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2023-11-23 08:23:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 75 states have internal predecessors, (90), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-23 08:23:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2023-11-23 08:23:48,907 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 88 [2023-11-23 08:23:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:48,909 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2023-11-23 08:23:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:23:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2023-11-23 08:23:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 08:23:48,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:48,913 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2023-11-23 08:23:48,931 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 08:23:49,127 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 08:23:49,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:49,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 543950567, now seen corresponding path program 3 times [2023-11-23 08:23:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:49,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526346898] [2023-11-23 08:23:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:23:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:23:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:23:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:23:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:23:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:23:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:23:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 08:23:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526346898] [2023-11-23 08:23:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526346898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060847624] [2023-11-23 08:23:49,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:23:49,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:49,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:49,746 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 08:23:49,769 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 08:23:50,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:23:50,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:23:50,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 2351 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 08:23:50,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 08:23:50,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:23:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 08:23:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060847624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:23:50,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:23:50,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 15 [2023-11-23 08:23:50,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213638853] [2023-11-23 08:23:50,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:23:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:23:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:23:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:23:50,471 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 08:23:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:23:51,550 INFO L93 Difference]: Finished difference Result 204 states and 276 transitions. [2023-11-23 08:23:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:23:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 94 [2023-11-23 08:23:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:23:51,552 INFO L225 Difference]: With dead ends: 204 [2023-11-23 08:23:51,552 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 08:23:51,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:23:51,553 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 164 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:23:51,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 372 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:23:51,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 08:23:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 08:23:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 70 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 08:23:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2023-11-23 08:23:51,559 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 94 [2023-11-23 08:23:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:23:51,559 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2023-11-23 08:23:51,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 08:23:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2023-11-23 08:23:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 08:23:51,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:23:51,561 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:23:51,594 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 08:23:51,764 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 08:23:51,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:23:51,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:23:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1304590446, now seen corresponding path program 1 times [2023-11-23 08:23:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:23:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698483429] [2023-11-23 08:23:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:51,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:23:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:23:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:23:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:23:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:23:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:23:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:23:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:23:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:23:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:23:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:23:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:23:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 08:23:53,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:23:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698483429] [2023-11-23 08:23:53,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698483429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813520025] [2023-11-23 08:23:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:23:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:23:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:23:53,203 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 08:23:53,220 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 08:23:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:23:53,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 08:23:53,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:23:53,725 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 08:23:53,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:23:53,991 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 26 treesize of output 14 [2023-11-23 08:23:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 08:23:54,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:23:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813520025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:23:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:23:54,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2023-11-23 08:23:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381084028] [2023-11-23 08:23:54,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:23:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:23:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:23:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:23:54,236 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:23:57,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:59,466 WARN L539 Checker$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 08:24:01,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:03,728 WARN L539 Checker$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 08:24:05,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:07,840 WARN L539 Checker$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 08:24:09,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:11,915 WARN L539 Checker$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 08:24:13,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:16,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:18,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:20,128 WARN L539 Checker$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 08:24:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:20,399 INFO L93 Difference]: Finished difference Result 299 states and 407 transitions. [2023-11-23 08:24:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:24:20,400 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 100 [2023-11-23 08:24:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:20,401 INFO L225 Difference]: With dead ends: 299 [2023-11-23 08:24:20,402 INFO L226 Difference]: Without dead ends: 204 [2023-11-23 08:24:20,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:24:20,403 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 160 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 28 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:20,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 907 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 726 Invalid, 12 Unknown, 0 Unchecked, 26.0s Time] [2023-11-23 08:24:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-23 08:24:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2023-11-23 08:24:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 128 states have internal predecessors, (154), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (62), 55 states have call predecessors, (62), 56 states have call successors, (62) [2023-11-23 08:24:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2023-11-23 08:24:20,432 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 274 transitions. Word has length 100 [2023-11-23 08:24:20,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:20,433 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 274 transitions. [2023-11-23 08:24:20,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 12 states have internal predecessors, (56), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:24:20,433 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 274 transitions. [2023-11-23 08:24:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 08:24:20,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:20,434 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:20,453 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 08:24:20,650 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 08:24:20,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:20,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2137843822, now seen corresponding path program 1 times [2023-11-23 08:24:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878862961] [2023-11-23 08:24:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:24:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:24:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:24:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:24:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:24:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:24:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:24:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:24:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:24:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:24:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 08:24:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878862961] [2023-11-23 08:24:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878862961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205894875] [2023-11-23 08:24:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:21,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:24:21,906 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 08:24:21,907 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 08:24:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 08:24:22,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:24:22,403 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 08:24:22,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:24:22,749 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 26 treesize of output 14 [2023-11-23 08:24:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 08:24:23,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:24:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205894875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:24:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2023-11-23 08:24:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110953801] [2023-11-23 08:24:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:23,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:24:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:24:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:24:23,499 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:24:26,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:28,833 WARN L539 Checker$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 08:24:30,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:33,034 WARN L539 Checker$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 08:24:35,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:37,144 WARN L539 Checker$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 08:24:39,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:41,193 WARN L539 Checker$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 08:24:43,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:45,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:47,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:49,402 WARN L539 Checker$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 08:24:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:49,685 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2023-11-23 08:24:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 08:24:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 108 [2023-11-23 08:24:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:49,688 INFO L225 Difference]: With dead ends: 346 [2023-11-23 08:24:49,688 INFO L226 Difference]: Without dead ends: 204 [2023-11-23 08:24:49,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2023-11-23 08:24:49,689 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 151 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 35 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 891 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 799 Invalid, 12 Unknown, 0 Unchecked, 26.0s Time] [2023-11-23 08:24:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-23 08:24:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2023-11-23 08:24:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 128 states have internal predecessors, (154), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (60), 55 states have call predecessors, (60), 56 states have call successors, (60) [2023-11-23 08:24:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 272 transitions. [2023-11-23 08:24:49,728 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 272 transitions. Word has length 108 [2023-11-23 08:24:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:49,728 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 272 transitions. [2023-11-23 08:24:49,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 7 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:24:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 272 transitions. [2023-11-23 08:24:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 08:24:49,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:49,734 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:49,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:24:49,950 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 08:24:49,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:49,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1650121742, now seen corresponding path program 1 times [2023-11-23 08:24:49,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:49,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273194756] [2023-11-23 08:24:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:49,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:24:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:24:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:24:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:24:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:24:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:24:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:24:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:24:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:24:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:24:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:24:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 08:24:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:50,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273194756] [2023-11-23 08:24:50,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273194756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:50,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765958558] [2023-11-23 08:24:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:50,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:50,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:24:50,939 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 08:24:50,940 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 08:24:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:51,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 08:24:51,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:24:51,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:24:51,543 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:24:51,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-23 08:24:51,584 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 08:24:52,183 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-23 08:24:52,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 31 [2023-11-23 08:24:52,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:24:52,204 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-23 08:24:52,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2023-11-23 08:24:52,246 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 45 treesize of output 36 [2023-11-23 08:24:52,603 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 45 treesize of output 36 [2023-11-23 08:24:52,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:24:52,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-11-23 08:24:52,682 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-11-23 08:24:52,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-11-23 08:24:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 100 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 08:24:54,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:24:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765958558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:59,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:24:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19] total 27 [2023-11-23 08:24:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012049487] [2023-11-23 08:24:59,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:24:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 08:24:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 08:24:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1013, Unknown=3, NotChecked=0, Total=1122 [2023-11-23 08:24:59,287 INFO L87 Difference]: Start difference. First operand 201 states and 272 transitions. Second operand has 27 states, 25 states have (on average 3.88) internal successors, (97), 23 states have internal predecessors, (97), 9 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:25:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:06,072 WARN L539 Checker$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 08:25:10,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:19,301 WARN L539 Checker$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 08:25:21,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:23,438 WARN L539 Checker$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 08:25:25,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:28,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:30,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:32,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:32,667 INFO L93 Difference]: Finished difference Result 693 states and 935 transitions. [2023-11-23 08:25:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-11-23 08:25:32,667 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.88) internal successors, (97), 23 states have internal predecessors, (97), 9 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 110 [2023-11-23 08:25:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:32,669 INFO L225 Difference]: With dead ends: 693 [2023-11-23 08:25:32,670 INFO L226 Difference]: Without dead ends: 499 [2023-11-23 08:25:32,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 199 SyntacticMatches, 7 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3719 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=2019, Invalid=10409, Unknown=4, NotChecked=0, Total=12432 [2023-11-23 08:25:32,674 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1098 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 244 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:32,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 556 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2873 Invalid, 10 Unknown, 0 Unchecked, 25.8s Time] [2023-11-23 08:25:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-23 08:25:32,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 279. [2023-11-23 08:25:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 202 states have (on average 1.2722772277227723) internal successors, (257), 208 states have internal predecessors, (257), 48 states have call successors, (48), 23 states have call predecessors, (48), 28 states have return successors, (56), 47 states have call predecessors, (56), 47 states have call successors, (56) [2023-11-23 08:25:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 361 transitions. [2023-11-23 08:25:32,734 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 361 transitions. Word has length 110 [2023-11-23 08:25:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:32,736 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 361 transitions. [2023-11-23 08:25:32,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.88) internal successors, (97), 23 states have internal predecessors, (97), 9 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-23 08:25:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 361 transitions. [2023-11-23 08:25:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 08:25:32,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:32,739 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:32,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:25:32,956 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 08:25:32,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:32,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -401840118, now seen corresponding path program 1 times [2023-11-23 08:25:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148098396] [2023-11-23 08:25:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:25:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:25:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:25:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:25:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:25:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:25:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 08:25:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:25:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:25:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:25:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:25:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-23 08:25:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148098396] [2023-11-23 08:25:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148098396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120234815] [2023-11-23 08:25:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:25:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:25:34,569 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 08:25:34,570 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 08:25:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:34,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-23 08:25:34,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:25:34,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:25:35,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-23 08:25:35,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:25:35,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 08:25:35,264 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 08:25:35,584 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-23 08:25:35,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 08:25:35,614 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 30 treesize of output 23 [2023-11-23 08:25:37,637 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.offset_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_29| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_29|) (+ |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.offset_BEFORE_CALL_22| 8)))) (and (<= 0 |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.offset_BEFORE_CALL_22|) (not (= .cse0 0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_29|)))) is different from true [2023-11-23 08:25:37,766 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 30 treesize of output 23 [2023-11-23 08:25:37,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:25:37,815 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 19 [2023-11-23 08:25:39,883 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_8| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_7| 8)))) (and (not (= .cse0 0)) (<= 0 |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_7|) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_8|)))) is different from true [2023-11-23 08:25:42,033 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_9| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_8| 8)))) (and (<= 0 |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.offset_BEFORE_CALL_8|) (not (= 0 .cse0)) (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_9|)))) is different from true [2023-11-23 08:25:44,178 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_12 Int) (v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_12 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_12) (+ v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_12 8)))) (and (<= (+ 2 .cse0) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_12) (<= 0 v_aws_byte_buf_write_~buf.offset_BEFORE_CALL_12) (not (= .cse0 0))))) is different from true [2023-11-23 08:25:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 82 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 45 not checked. [2023-11-23 08:25:46,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:25:50,840 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 Int) (v_ArrVal_681 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_13| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_13| Int)) (or (< 0 |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_13|) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_681))) (store .cse0 |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_13| (store (select .cse0 |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_13|) |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_13| v_ArrVal_683))) |c_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.offset|)) 0)))) is different from false [2023-11-23 08:25:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120234815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:50,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:25:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23] total 32 [2023-11-23 08:25:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103495205] [2023-11-23 08:25:50,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:25:50,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 08:25:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 08:25:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1162, Unknown=7, NotChecked=360, Total=1640 [2023-11-23 08:25:50,866 INFO L87 Difference]: Start difference. First operand 279 states and 361 transitions. Second operand has 32 states, 29 states have (on average 4.310344827586207) internal successors, (125), 27 states have internal predecessors, (125), 11 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 08:25:58,278 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 08:26:02,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:04,365 WARN L539 Checker$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 08:26:06,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:08,418 WARN L539 Checker$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 08:26:10,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:12,536 WARN L539 Checker$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 08:26:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:16,553 WARN L539 Checker$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 08:26:18,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:20,614 WARN L539 Checker$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 08:26:22,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:25,815 WARN L539 Checker$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 08:26:29,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:31,867 WARN L539 Checker$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 08:26:33,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:35,927 WARN L539 Checker$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 08:26:38,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:40,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:42,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:44,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:46,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:26:48,212 WARN L539 Checker$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 08:26:48,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:48,680 INFO L93 Difference]: Finished difference Result 560 states and 738 transitions. [2023-11-23 08:26:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-23 08:26:48,681 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.310344827586207) internal successors, (125), 27 states have internal predecessors, (125), 11 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 114 [2023-11-23 08:26:48,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:48,682 INFO L225 Difference]: With dead ends: 560 [2023-11-23 08:26:48,682 INFO L226 Difference]: Without dead ends: 358 [2023-11-23 08:26:48,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 181 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=666, Invalid=4601, Unknown=9, NotChecked=730, Total=6006 [2023-11-23 08:26:48,685 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 688 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 316 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 1196 IncrementalHoareTripleChecker+Unchecked, 51.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:48,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 668 Invalid, 4405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2870 Invalid, 23 Unknown, 1196 Unchecked, 51.8s Time] [2023-11-23 08:26:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-23 08:26:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 322. [2023-11-23 08:26:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 238 states have (on average 1.273109243697479) internal successors, (303), 243 states have internal predecessors, (303), 54 states have call successors, (54), 25 states have call predecessors, (54), 29 states have return successors, (66), 53 states have call predecessors, (66), 53 states have call successors, (66) [2023-11-23 08:26:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 423 transitions. [2023-11-23 08:26:48,723 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 423 transitions. Word has length 114 [2023-11-23 08:26:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:48,724 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 423 transitions. [2023-11-23 08:26:48,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.310344827586207) internal successors, (125), 27 states have internal predecessors, (125), 11 states have call successors, (29), 12 states have call predecessors, (29), 10 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-23 08:26:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 423 transitions. [2023-11-23 08:26:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 08:26:48,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:48,725 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:26:48,749 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 08:26:48,944 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 08:26:48,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:48,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1551880852, now seen corresponding path program 1 times [2023-11-23 08:26:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:48,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217997813] [2023-11-23 08:26:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:26:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:26:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:26:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:26:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217997813] [2023-11-23 08:26:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217997813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023859534] [2023-11-23 08:26:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:49,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:49,753 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 08:26:49,754 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 08:26:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:50,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 08:26:50,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 14 proven. 78 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:26:50,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:26:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-23 08:26:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023859534] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:50,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:26:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 15] total 22 [2023-11-23 08:26:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548036742] [2023-11-23 08:26:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:26:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:26:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:26:50,491 INFO L87 Difference]: Start difference. First operand 322 states and 423 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:26:51,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:51,547 INFO L93 Difference]: Finished difference Result 368 states and 480 transitions. [2023-11-23 08:26:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:26:51,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2023-11-23 08:26:51,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:51,549 INFO L225 Difference]: With dead ends: 368 [2023-11-23 08:26:51,550 INFO L226 Difference]: Without dead ends: 366 [2023-11-23 08:26:51,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:26:51,550 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 17 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:51,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1076 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:26:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-23 08:26:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 348. [2023-11-23 08:26:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 256 states have (on average 1.25390625) internal successors, (321), 265 states have internal predecessors, (321), 56 states have call successors, (56), 27 states have call predecessors, (56), 35 states have return successors, (82), 55 states have call predecessors, (82), 55 states have call successors, (82) [2023-11-23 08:26:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 459 transitions. [2023-11-23 08:26:51,595 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 459 transitions. Word has length 116 [2023-11-23 08:26:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:51,595 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 459 transitions. [2023-11-23 08:26:51,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:26:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 459 transitions. [2023-11-23 08:26:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 08:26:51,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:51,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-23 08:26:51,616 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 08:26:51,812 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 08:26:51,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:51,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:51,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1465617549, now seen corresponding path program 1 times [2023-11-23 08:26:51,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:51,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133492031] [2023-11-23 08:26:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:51,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:26:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:26:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:26:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 08:26:52,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133492031] [2023-11-23 08:26:52,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133492031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:52,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130114961] [2023-11-23 08:26:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:52,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:52,448 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 08:26:52,459 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 08:26:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:52,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:26:52,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 08:26:52,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:26:52,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130114961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:26:52,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:26:52,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 08:26:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763242405] [2023-11-23 08:26:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:26:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:26:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:26:52,918 INFO L87 Difference]: Start difference. First operand 348 states and 459 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:26:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:53,697 INFO L93 Difference]: Finished difference Result 634 states and 825 transitions. [2023-11-23 08:26:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:26:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2023-11-23 08:26:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:53,700 INFO L225 Difference]: With dead ends: 634 [2023-11-23 08:26:53,700 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 08:26:53,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:26:53,701 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:53,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 999 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:26:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 08:26:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 348. [2023-11-23 08:26:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 256 states have (on average 1.25390625) internal successors, (321), 265 states have internal predecessors, (321), 56 states have call successors, (56), 27 states have call predecessors, (56), 35 states have return successors, (78), 55 states have call predecessors, (78), 55 states have call successors, (78) [2023-11-23 08:26:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 455 transitions. [2023-11-23 08:26:53,739 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 455 transitions. Word has length 118 [2023-11-23 08:26:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:53,740 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 455 transitions. [2023-11-23 08:26:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:26:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 455 transitions. [2023-11-23 08:26:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:26:53,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:53,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:26:53,772 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 08:26:53,975 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 08:26:53,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:53,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2103726732, now seen corresponding path program 2 times [2023-11-23 08:26:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978973775] [2023-11-23 08:26:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:26:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:26:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:26:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 08:26:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978973775] [2023-11-23 08:26:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978973775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211949866] [2023-11-23 08:26:54,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:26:54,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:54,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:54,553 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 08:26:54,557 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 08:26:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:26:54,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:26:54,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:26:54,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:26:55,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:26:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211949866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:26:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:26:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-23 08:26:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647299126] [2023-11-23 08:26:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:26:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:26:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:26:55,027 INFO L87 Difference]: Start difference. First operand 348 states and 455 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:26:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:55,845 INFO L93 Difference]: Finished difference Result 794 states and 1082 transitions. [2023-11-23 08:26:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:26:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 120 [2023-11-23 08:26:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:55,847 INFO L225 Difference]: With dead ends: 794 [2023-11-23 08:26:55,848 INFO L226 Difference]: Without dead ends: 482 [2023-11-23 08:26:55,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:26:55,850 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 41 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:55,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 477 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:26:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-23 08:26:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 386. [2023-11-23 08:26:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 294 states have (on average 1.251700680272109) internal successors, (368), 303 states have internal predecessors, (368), 56 states have call successors, (56), 27 states have call predecessors, (56), 35 states have return successors, (78), 55 states have call predecessors, (78), 55 states have call successors, (78) [2023-11-23 08:26:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 502 transitions. [2023-11-23 08:26:55,907 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 502 transitions. Word has length 120 [2023-11-23 08:26:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:55,908 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 502 transitions. [2023-11-23 08:26:55,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 08:26:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 502 transitions. [2023-11-23 08:26:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:26:55,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:55,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-23 08:26:55,933 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 08:26:56,124 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 08:26:56,125 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:56,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash -444953292, now seen corresponding path program 1 times [2023-11-23 08:26:56,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:56,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491882414] [2023-11-23 08:26:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:26:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:26:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:26:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 08:26:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:56,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491882414] [2023-11-23 08:26:56,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491882414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:56,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73833637] [2023-11-23 08:26:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:56,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:56,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:56,422 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 08:26:56,423 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 08:26:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:56,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:26:56,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:26:56,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:26:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73833637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:26:56,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:26:56,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:26:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695839226] [2023-11-23 08:26:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:26:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:26:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:26:56,827 INFO L87 Difference]: Start difference. First operand 386 states and 502 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:26:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:57,066 INFO L93 Difference]: Finished difference Result 771 states and 1021 transitions. [2023-11-23 08:26:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:26:57,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-11-23 08:26:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:57,068 INFO L225 Difference]: With dead ends: 771 [2023-11-23 08:26:57,068 INFO L226 Difference]: Without dead ends: 433 [2023-11-23 08:26:57,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:26:57,071 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:57,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 410 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:26:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-23 08:26:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 400. [2023-11-23 08:26:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 308 states have (on average 1.2370129870129871) internal successors, (381), 317 states have internal predecessors, (381), 56 states have call successors, (56), 27 states have call predecessors, (56), 35 states have return successors, (78), 55 states have call predecessors, (78), 55 states have call successors, (78) [2023-11-23 08:26:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 515 transitions. [2023-11-23 08:26:57,124 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 515 transitions. Word has length 120 [2023-11-23 08:26:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:57,125 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 515 transitions. [2023-11-23 08:26:57,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:26:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 515 transitions. [2023-11-23 08:26:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:26:57,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:57,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2023-11-23 08:26:57,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:26:57,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:26:57,360 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:57,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:57,361 INFO L85 PathProgramCache]: Analyzing trace with hash 181577140, now seen corresponding path program 1 times [2023-11-23 08:26:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:57,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248477834] [2023-11-23 08:26:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:57,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:26:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:26:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:26:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 08:26:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248477834] [2023-11-23 08:26:57,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248477834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896265365] [2023-11-23 08:26:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:57,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:57,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:57,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:26:57,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:26:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:57,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:26:57,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 08:26:58,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:26:58,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896265365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:26:58,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:26:58,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 08:26:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619374542] [2023-11-23 08:26:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:26:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:26:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:26:58,006 INFO L87 Difference]: Start difference. First operand 400 states and 515 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:26:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:26:58,232 INFO L93 Difference]: Finished difference Result 708 states and 907 transitions. [2023-11-23 08:26:58,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:26:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-11-23 08:26:58,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:26:58,234 INFO L225 Difference]: With dead ends: 708 [2023-11-23 08:26:58,234 INFO L226 Difference]: Without dead ends: 364 [2023-11-23 08:26:58,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:26:58,235 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 28 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:26:58,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 426 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:26:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-23 08:26:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 305. [2023-11-23 08:26:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 223 states have (on average 1.2062780269058295) internal successors, (269), 230 states have internal predecessors, (269), 50 states have call successors, (50), 25 states have call predecessors, (50), 31 states have return successors, (60), 49 states have call predecessors, (60), 49 states have call successors, (60) [2023-11-23 08:26:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 379 transitions. [2023-11-23 08:26:58,263 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 379 transitions. Word has length 120 [2023-11-23 08:26:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:26:58,263 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 379 transitions. [2023-11-23 08:26:58,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 08:26:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 379 transitions. [2023-11-23 08:26:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:26:58,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:26:58,264 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:26:58,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:26:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 08:26:58,478 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:26:58,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:26:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash 612858738, now seen corresponding path program 1 times [2023-11-23 08:26:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:26:58,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041831666] [2023-11-23 08:26:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:26:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:26:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:26:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:26:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:26:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:26:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:26:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:26:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:26:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:26:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:26:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:26:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 08:26:59,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:26:59,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041831666] [2023-11-23 08:26:59,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041831666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:26:59,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72834136] [2023-11-23 08:26:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:26:59,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:26:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:26:59,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:26:59,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:26:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:26:59,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:26:59,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:26:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 08:26:59,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:26:59,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72834136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:26:59,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:26:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 08:26:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781556231] [2023-11-23 08:26:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:26:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:26:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:26:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:26:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:26:59,572 INFO L87 Difference]: Start difference. First operand 305 states and 379 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:27:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:27:00,421 INFO L93 Difference]: Finished difference Result 560 states and 701 transitions. [2023-11-23 08:27:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:27:00,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2023-11-23 08:27:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:27:00,423 INFO L225 Difference]: With dead ends: 560 [2023-11-23 08:27:00,423 INFO L226 Difference]: Without dead ends: 294 [2023-11-23 08:27:00,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:27:00,426 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:27:00,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 999 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:27:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-23 08:27:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 286. [2023-11-23 08:27:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 206 states have (on average 1.203883495145631) internal successors, (248), 213 states have internal predecessors, (248), 49 states have call successors, (49), 25 states have call predecessors, (49), 30 states have return successors, (58), 47 states have call predecessors, (58), 48 states have call successors, (58) [2023-11-23 08:27:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 355 transitions. [2023-11-23 08:27:00,473 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 355 transitions. Word has length 120 [2023-11-23 08:27:00,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:27:00,473 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 355 transitions. [2023-11-23 08:27:00,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 08:27:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 355 transitions. [2023-11-23 08:27:00,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 08:27:00,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:27:00,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2023-11-23 08:27:00,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 08:27:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:27:00,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:27:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:27:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 384304349, now seen corresponding path program 2 times [2023-11-23 08:27:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:27:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784018699] [2023-11-23 08:27:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:27:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:27:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:27:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:27:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:27:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:27:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:27:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:27:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:27:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:27:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:27:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:27:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 08:27:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:27:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784018699] [2023-11-23 08:27:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784018699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:27:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699068863] [2023-11-23 08:27:01,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:27:01,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:27:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:27:01,306 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:27:01,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:27:01,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:27:01,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:27:01,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 08:27:01,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:27:01,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:27:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 100 proven. 24 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:27:02,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:27:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 43 proven. 26 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 08:27:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699068863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:27:02,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:27:02,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 31 [2023-11-23 08:27:02,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068415083] [2023-11-23 08:27:02,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:27:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:27:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:27:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:27:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:27:02,884 INFO L87 Difference]: Start difference. First operand 286 states and 355 transitions. Second operand has 31 states, 28 states have (on average 4.75) internal successors, (133), 27 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 8 states have call predecessors, (29), 9 states have call successors, (29) [2023-11-23 08:27:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:27:06,776 INFO L93 Difference]: Finished difference Result 587 states and 721 transitions. [2023-11-23 08:27:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-23 08:27:06,777 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.75) internal successors, (133), 27 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 8 states have call predecessors, (29), 9 states have call successors, (29) Word has length 122 [2023-11-23 08:27:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:27:06,778 INFO L225 Difference]: With dead ends: 587 [2023-11-23 08:27:06,778 INFO L226 Difference]: Without dead ends: 341 [2023-11-23 08:27:06,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 244 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=317, Invalid=2545, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 08:27:06,780 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 213 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:27:06,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 738 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 08:27:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-23 08:27:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 295. [2023-11-23 08:27:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 213 states have (on average 1.1971830985915493) internal successors, (255), 220 states have internal predecessors, (255), 50 states have call successors, (50), 26 states have call predecessors, (50), 31 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2023-11-23 08:27:06,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 362 transitions. [2023-11-23 08:27:06,809 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 362 transitions. Word has length 122 [2023-11-23 08:27:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:27:06,809 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 362 transitions. [2023-11-23 08:27:06,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.75) internal successors, (133), 27 states have internal predecessors, (133), 9 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (29), 8 states have call predecessors, (29), 9 states have call successors, (29) [2023-11-23 08:27:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 362 transitions. [2023-11-23 08:27:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 08:27:06,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:27:06,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:27:06,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-23 08:27:07,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 08:27:07,024 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:27:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:27:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1740104466, now seen corresponding path program 1 times [2023-11-23 08:27:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:27:07,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16443214] [2023-11-23 08:27:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:27:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:27:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:27:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:27:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:27:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:27:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:27:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:27:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:27:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:27:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:27:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:27:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 08:27:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:27:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16443214] [2023-11-23 08:27:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16443214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:27:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358807913] [2023-11-23 08:27:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:27:08,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:27:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:27:08,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:27:08,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 08:27:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:09,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-23 08:27:09,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:27:09,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:27:09,302 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-23 08:27:09,314 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:27:09,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 13 [2023-11-23 08:27:09,638 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2023-11-23 08:27:09,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2023-11-23 08:27:09,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:27:09,669 INFO L349 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2023-11-23 08:27:09,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 1 [2023-11-23 08:27:09,692 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:27:09,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 15 [2023-11-23 08:27:09,695 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 28 treesize of output 21 [2023-11-23 08:27:10,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 44 treesize of output 28 [2023-11-23 08:27:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 66 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:27:10,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:27:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358807913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:27:10,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:27:10,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 24 [2023-11-23 08:27:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511990262] [2023-11-23 08:27:10,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:27:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 08:27:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:27:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 08:27:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=678, Unknown=2, NotChecked=52, Total=812 [2023-11-23 08:27:10,421 INFO L87 Difference]: Start difference. First operand 295 states and 362 transitions. Second operand has 24 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 10 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (24), 9 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-23 08:27:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:27:16,143 INFO L93 Difference]: Finished difference Result 782 states and 984 transitions. [2023-11-23 08:27:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 08:27:16,143 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 10 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (24), 9 states have call predecessors, (24), 10 states have call successors, (24) Word has length 124 [2023-11-23 08:27:16,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:27:16,162 INFO L225 Difference]: With dead ends: 782 [2023-11-23 08:27:16,164 INFO L226 Difference]: Without dead ends: 549 [2023-11-23 08:27:16,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 209 SyntacticMatches, 14 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=514, Invalid=3148, Unknown=2, NotChecked=118, Total=3782 [2023-11-23 08:27:16,167 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 457 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 4246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:27:16,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 905 Invalid, 4246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3598 Invalid, 0 Unknown, 386 Unchecked, 4.4s Time] [2023-11-23 08:27:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-11-23 08:27:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 446. [2023-11-23 08:27:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 329 states have (on average 1.182370820668693) internal successors, (389), 341 states have internal predecessors, (389), 71 states have call successors, (71), 36 states have call predecessors, (71), 45 states have return successors, (91), 68 states have call predecessors, (91), 69 states have call successors, (91) [2023-11-23 08:27:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 551 transitions. [2023-11-23 08:27:16,242 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 551 transitions. Word has length 124 [2023-11-23 08:27:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:27:16,242 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 551 transitions. [2023-11-23 08:27:16,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 10 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (24), 9 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-23 08:27:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 551 transitions. [2023-11-23 08:27:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 08:27:16,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:27:16,244 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:27:16,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 08:27:16,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 08:27:16,461 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:27:16,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:27:16,461 INFO L85 PathProgramCache]: Analyzing trace with hash -65333868, now seen corresponding path program 1 times [2023-11-23 08:27:16,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:27:16,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397771221] [2023-11-23 08:27:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:27:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:27:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 08:27:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 08:27:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:27:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 08:27:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:27:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:27:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:27:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:27:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:27:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:27:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:27:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 15 proven. 83 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 08:27:21,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:27:21,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397771221] [2023-11-23 08:27:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397771221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:27:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889988756] [2023-11-23 08:27:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:27:21,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:27:21,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:27:21,321 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:27:21,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 08:27:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:27:22,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 180 conjunts are in the unsatisfiable core [2023-11-23 08:27:22,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:27:22,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-23 08:27:22,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:27:23,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 08:27:23,331 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2023-11-23 08:27:23,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 35 [2023-11-23 08:27:23,424 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:27:23,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-23 08:27:23,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:27:23,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:27:23,673 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:27:23,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2023-11-23 08:27:23,819 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:27:23,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-23 08:27:23,828 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:27:23,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 08:27:26,880 INFO L349 Elim1Store]: treesize reduction 208, result has 16.8 percent of original size [2023-11-23 08:27:26,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 41 treesize of output 61 [2023-11-23 08:27:27,111 INFO L349 Elim1Store]: treesize reduction 48, result has 34.2 percent of original size [2023-11-23 08:27:27,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 4788 treesize of output 3376 Killed by 15