./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:06:20,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:06:20,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:06:20,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:06:20,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:06:20,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:06:20,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:06:20,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:06:20,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:06:20,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:06:20,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:06:20,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:06:20,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:06:20,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:06:20,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:06:20,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:06:20,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:06:20,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:06:20,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:06:20,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:06:20,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:06:20,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:06:20,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:06:20,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:06:20,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:06:20,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:06:20,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:06:20,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:06:20,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:06:20,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:06:20,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:06:20,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:06:20,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:06:20,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:06:20,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:06:20,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:06:20,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:06:20,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:06:20,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:06:20,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:06:20,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:06:20,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:06:20,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:06:20,875 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:06:20,875 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:06:20,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i [2023-11-23 08:06:22,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:06:23,264 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:06:23,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_advance_harness.i [2023-11-23 08:06:23,303 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab91797f4/a6582a6eccb743e899ee0da31d986318/FLAGd9f936f19 [2023-11-23 08:06:23,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab91797f4/a6582a6eccb743e899ee0da31d986318 [2023-11-23 08:06:23,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:06:23,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:06:23,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:06:23,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:06:23,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:06:23,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:06:23" (1/1) ... [2023-11-23 08:06:23,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570a20f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:23, skipping insertion in model container [2023-11-23 08:06:23,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:06:23" (1/1) ... [2023-11-23 08:06:23,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:06:23,673 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_advance_harness.i[4494,4507] [2023-11-23 08:06:23,681 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_advance_harness.i[4554,4567] [2023-11-23 08:06:24,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,413 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:24,726 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:06:24,727 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:06:24,728 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:06:24,729 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:06:24,730 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:06:24,730 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:06:24,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:06:24,731 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:06:24,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:06:24,732 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:06:25,022 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:06:25,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:06:25,168 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_advance_harness.i[4494,4507] [2023-11-23 08:06:25,168 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_advance_harness.i[4554,4567] [2023-11-23 08:06:25,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,212 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,214 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,215 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,253 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:06:25,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:06:25,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:06:25,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:06:25,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:06:25,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:06:25,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:06:25,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:06:25,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:06:25,265 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:06:25,357 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 08:06:25,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:06:25,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 08:06:25,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:06:25,741 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,741 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,741 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,741 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,742 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,742 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,742 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,742 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,742 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,743 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,743 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,743 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,743 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,744 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,744 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,744 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,744 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,744 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:06:25,752 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:06:25,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25 WrapperNode [2023-11-23 08:06:25,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:06:25,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:06:25,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:06:25,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:06:25,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:25,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,053 INFO L138 Inliner]: procedures = 690, calls = 2680, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2023-11-23 08:06:26,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:06:26,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:06:26,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:06:26,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:06:26,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:06:26,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:06:26,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:06:26,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:06:26,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (1/1) ... [2023-11-23 08:06:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:06:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:26,246 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 08:06:26,332 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 08:06:26,388 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:06:26,390 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:06:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:06:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:06:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:06:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:06:26,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:06:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:06:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:06:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:06:26,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:06:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:06:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:06:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:06:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:06:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:06:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:06:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:06:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:06:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:06:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:06:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:06:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:06:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:06:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:06:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:06:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 08:06:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 08:06:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:06:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:06:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:06:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:06:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:06:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:06:26,858 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:06:26,861 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:06:28,132 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:06:28,384 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:06:28,384 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 08:06:28,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:06:28 BoogieIcfgContainer [2023-11-23 08:06:28,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:06:28,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:06:28,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:06:28,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:06:28,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:06:23" (1/3) ... [2023-11-23 08:06:28,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608c1954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:06:28, skipping insertion in model container [2023-11-23 08:06:28,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:06:25" (2/3) ... [2023-11-23 08:06:28,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608c1954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:06:28, skipping insertion in model container [2023-11-23 08:06:28,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:06:28" (3/3) ... [2023-11-23 08:06:28,395 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2023-11-23 08:06:28,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:06:28,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:06:28,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:06:28,490 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;@6f50c752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:06:28,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:06:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-23 08:06:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 08:06:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:28,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:28,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:28,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1095336238, now seen corresponding path program 1 times [2023-11-23 08:06:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:28,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465279415] [2023-11-23 08:06:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:06:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:06:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:06:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:06:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:06:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:06:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 08:06:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465279415] [2023-11-23 08:06:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465279415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:06:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:06:29,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567728447] [2023-11-23 08:06:29,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:06:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:06:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:06:29,412 INFO L87 Difference]: Start difference. First operand has 157 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 90 states have internal predecessors, (113), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:06:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:30,225 INFO L93 Difference]: Finished difference Result 317 states and 488 transitions. [2023-11-23 08:06:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:06:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2023-11-23 08:06:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:30,238 INFO L225 Difference]: With dead ends: 317 [2023-11-23 08:06:30,239 INFO L226 Difference]: Without dead ends: 161 [2023-11-23 08:06:30,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:06:30,248 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 59 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 230 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:06:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-23 08:06:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2023-11-23 08:06:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-23 08:06:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2023-11-23 08:06:30,297 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 79 [2023-11-23 08:06:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:30,299 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2023-11-23 08:06:30,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:06:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2023-11-23 08:06:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 08:06:30,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:30,303 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:30,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:06:30,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:30,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2054694842, now seen corresponding path program 1 times [2023-11-23 08:06:30,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:30,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288941462] [2023-11-23 08:06:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 08:06:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:06:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 08:06:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:06:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:06:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:06:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:06:31,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288941462] [2023-11-23 08:06:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288941462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895969604] [2023-11-23 08:06:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:31,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:31,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:31,139 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 08:06:31,156 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 08:06:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:31,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:06:31,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:06:31,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:06:31,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895969604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:31,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:31,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 08:06:31,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072378860] [2023-11-23 08:06:31,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:31,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:06:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:06:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:06:31,799 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 08:06:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:32,259 INFO L93 Difference]: Finished difference Result 306 states and 434 transitions. [2023-11-23 08:06:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:06:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 84 [2023-11-23 08:06:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:32,262 INFO L225 Difference]: With dead ends: 306 [2023-11-23 08:06:32,263 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 08:06:32,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:06:32,265 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 68 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:32,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 463 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:06:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 08:06:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 08:06:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2023-11-23 08:06:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 226 transitions. [2023-11-23 08:06:32,282 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 226 transitions. Word has length 84 [2023-11-23 08:06:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:32,283 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 226 transitions. [2023-11-23 08:06:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 08:06:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 226 transitions. [2023-11-23 08:06:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 08:06:32,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:32,286 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:32,310 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 08:06:32,488 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 08:06:32,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:32,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash -522456559, now seen corresponding path program 1 times [2023-11-23 08:06:32,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:32,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478463185] [2023-11-23 08:06:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:06:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:06:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:06:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:06:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 08:06:33,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478463185] [2023-11-23 08:06:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478463185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528858059] [2023-11-23 08:06:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:33,289 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 08:06:33,306 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 08:06:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:33,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:06:33,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 08:06:34,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:06:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528858059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:34,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:06:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660807039] [2023-11-23 08:06:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:06:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:06:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:06:34,112 INFO L87 Difference]: Start difference. First operand 157 states and 226 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:06:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:35,093 INFO L93 Difference]: Finished difference Result 272 states and 393 transitions. [2023-11-23 08:06:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:06:35,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-23 08:06:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:35,100 INFO L225 Difference]: With dead ends: 272 [2023-11-23 08:06:35,100 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 08:06:35,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:06:35,103 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 76 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:35,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 786 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:06:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 08:06:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 08:06:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2023-11-23 08:06:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 223 transitions. [2023-11-23 08:06:35,147 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 223 transitions. Word has length 90 [2023-11-23 08:06:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:35,147 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 223 transitions. [2023-11-23 08:06:35,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:06:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 223 transitions. [2023-11-23 08:06:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 08:06:35,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:35,150 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:35,196 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 08:06:35,362 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 08:06:35,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:35,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash -358112868, now seen corresponding path program 2 times [2023-11-23 08:06:35,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:35,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526007220] [2023-11-23 08:06:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:06:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:06:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 08:06:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526007220] [2023-11-23 08:06:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526007220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536523099] [2023-11-23 08:06:36,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:06:36,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:36,775 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 08:06:36,811 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 08:06:37,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:06:37,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:06:37,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:06:37,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-23 08:06:37,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:06:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 08:06:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536523099] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:06:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2023-11-23 08:06:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429271537] [2023-11-23 08:06:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:06:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:06:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:06:37,935 INFO L87 Difference]: Start difference. First operand 157 states and 223 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 08:06:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:38,760 INFO L93 Difference]: Finished difference Result 239 states and 340 transitions. [2023-11-23 08:06:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:06:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 96 [2023-11-23 08:06:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:38,762 INFO L225 Difference]: With dead ends: 239 [2023-11-23 08:06:38,763 INFO L226 Difference]: Without dead ends: 157 [2023-11-23 08:06:38,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:06:38,764 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 212 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:38,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 729 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:06:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-23 08:06:38,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-23 08:06:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 91 states have internal predecessors, (108), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-23 08:06:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 222 transitions. [2023-11-23 08:06:38,778 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 222 transitions. Word has length 96 [2023-11-23 08:06:38,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:38,779 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 222 transitions. [2023-11-23 08:06:38,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 08:06:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 222 transitions. [2023-11-23 08:06:38,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 08:06:38,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:38,781 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:38,803 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 08:06:39,000 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 08:06:39,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:39,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1804538673, now seen corresponding path program 3 times [2023-11-23 08:06:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:39,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962779011] [2023-11-23 08:06:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:06:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:06:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:06:39,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:39,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962779011] [2023-11-23 08:06:39,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962779011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:39,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863777791] [2023-11-23 08:06:39,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:06:39,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:39,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:39,846 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 08:06:39,866 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 08:06:40,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 08:06:40,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:06:40,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:06:40,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 08:06:40,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:06:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863777791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 08:06:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464934782] [2023-11-23 08:06:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:40,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:06:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:06:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:06:40,444 INFO L87 Difference]: Start difference. First operand 157 states and 222 transitions. Second operand has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:06:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:41,446 INFO L93 Difference]: Finished difference Result 168 states and 243 transitions. [2023-11-23 08:06:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:06:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-23 08:06:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:41,449 INFO L225 Difference]: With dead ends: 168 [2023-11-23 08:06:41,449 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 08:06:41,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:06:41,450 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 23 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:41,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1389 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:06:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 08:06:41,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-11-23 08:06:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 94 states have (on average 1.202127659574468) internal successors, (113), 97 states have internal predecessors, (113), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2023-11-23 08:06:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 240 transitions. [2023-11-23 08:06:41,475 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 240 transitions. Word has length 102 [2023-11-23 08:06:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:41,477 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 240 transitions. [2023-11-23 08:06:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:06:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 240 transitions. [2023-11-23 08:06:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 08:06:41,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:41,479 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:41,504 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 08:06:41,696 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 08:06:41,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:41,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash 258000617, now seen corresponding path program 1 times [2023-11-23 08:06:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:41,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275618289] [2023-11-23 08:06:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:41,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:06:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:06:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:06:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275618289] [2023-11-23 08:06:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275618289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672135231] [2023-11-23 08:06:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:42,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:42,280 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 08:06:42,296 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 08:06:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:43,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:06:43,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:06:43,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:06:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672135231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:06:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32018206] [2023-11-23 08:06:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:06:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:06:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:06:43,205 INFO L87 Difference]: Start difference. First operand 165 states and 240 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:06:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:44,021 INFO L93 Difference]: Finished difference Result 296 states and 432 transitions. [2023-11-23 08:06:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:06:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 106 [2023-11-23 08:06:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:44,023 INFO L225 Difference]: With dead ends: 296 [2023-11-23 08:06:44,023 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 08:06:44,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:06:44,025 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 75 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 808 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:06:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 08:06:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-23 08:06:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 95 states have internal predecessors, (111), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (66), 55 states have call predecessors, (66), 55 states have call successors, (66) [2023-11-23 08:06:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 233 transitions. [2023-11-23 08:06:44,038 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 233 transitions. Word has length 106 [2023-11-23 08:06:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:44,038 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 233 transitions. [2023-11-23 08:06:44,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:06:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 233 transitions. [2023-11-23 08:06:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:06:44,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:44,040 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:44,063 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 08:06:44,260 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 08:06:44,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:44,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash 499669438, now seen corresponding path program 1 times [2023-11-23 08:06:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922067076] [2023-11-23 08:06:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:06:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:06:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 08:06:45,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922067076] [2023-11-23 08:06:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922067076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:06:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:06:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417248495] [2023-11-23 08:06:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:06:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:06:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:06:45,615 INFO L87 Difference]: Start difference. First operand 163 states and 233 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:06:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:46,983 INFO L93 Difference]: Finished difference Result 349 states and 523 transitions. [2023-11-23 08:06:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:06:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-11-23 08:06:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:46,985 INFO L225 Difference]: With dead ends: 349 [2023-11-23 08:06:46,985 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 08:06:46,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:06:46,987 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 134 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:46,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 425 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:06:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 08:06:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2023-11-23 08:06:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 100 states have internal predecessors, (118), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (66), 55 states have call predecessors, (66), 55 states have call successors, (66) [2023-11-23 08:06:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 240 transitions. [2023-11-23 08:06:47,002 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 240 transitions. Word has length 112 [2023-11-23 08:06:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:47,003 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 240 transitions. [2023-11-23 08:06:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 08:06:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 240 transitions. [2023-11-23 08:06:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:06:47,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:47,004 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:06:47,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:47,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:47,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1200734016, now seen corresponding path program 1 times [2023-11-23 08:06:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41623812] [2023-11-23 08:06:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:47,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:06:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:06:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:06:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41623812] [2023-11-23 08:06:51,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41623812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:06:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 08:06:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270906842] [2023-11-23 08:06:51,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:51,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:06:51,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:06:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:06:51,448 INFO L87 Difference]: Start difference. First operand 168 states and 240 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:06:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:53,483 INFO L93 Difference]: Finished difference Result 279 states and 415 transitions. [2023-11-23 08:06:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:06:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 112 [2023-11-23 08:06:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:53,485 INFO L225 Difference]: With dead ends: 279 [2023-11-23 08:06:53,485 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 08:06:53,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:06:53,488 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 208 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:53,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 512 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 08:06:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 08:06:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2023-11-23 08:06:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 114 states have internal predecessors, (136), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (76), 55 states have call predecessors, (76), 55 states have call successors, (76) [2023-11-23 08:06:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2023-11-23 08:06:53,504 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 112 [2023-11-23 08:06:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:53,505 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2023-11-23 08:06:53,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:06:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2023-11-23 08:06:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 08:06:53,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:53,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:53,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 08:06:53,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:53,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash 189616766, now seen corresponding path program 1 times [2023-11-23 08:06:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571600068] [2023-11-23 08:06:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:06:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:06:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:06:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:06:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:06:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 08:06:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:06:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:06:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:06:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:06:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:06:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:06:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:06:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 08:06:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571600068] [2023-11-23 08:06:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571600068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596902505] [2023-11-23 08:06:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:56,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:56,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:56,089 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 08:06:56,094 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 08:06:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:56,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 08:06:56,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:56,961 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 10 treesize of output 8 [2023-11-23 08:06:57,095 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 08:06:57,752 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 19 treesize of output 14 [2023-11-23 08:06:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 08:06:58,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:06:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596902505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:06:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 28 [2023-11-23 08:06:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307084913] [2023-11-23 08:06:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:06:58,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:06:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:06:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:06:58,247 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 15 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:07:02,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:04,192 WARN L539 Checker$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 08:07:06,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:08,827 WARN L539 Checker$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 08:07:11,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:13,104 WARN L539 Checker$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 08:07:15,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:17,776 WARN L539 Checker$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 08:07:19,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:21,968 WARN L539 Checker$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 08:07:24,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:26,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:28,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:30,426 WARN L539 Checker$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 08:07:32,688 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 08:07:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:07:32,931 INFO L93 Difference]: Finished difference Result 499 states and 737 transitions. [2023-11-23 08:07:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:07:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 112 [2023-11-23 08:07:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:07:32,938 INFO L225 Difference]: With dead ends: 499 [2023-11-23 08:07:32,938 INFO L226 Difference]: Without dead ends: 323 [2023-11-23 08:07:32,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 08:07:32,940 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 216 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 91 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:07:32,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1894 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1366 Invalid, 15 Unknown, 0 Unchecked, 34.4s Time] [2023-11-23 08:07:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-23 08:07:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 297. [2023-11-23 08:07:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 185 states have (on average 1.2324324324324325) internal successors, (228), 192 states have internal predecessors, (228), 90 states have call successors, (90), 18 states have call predecessors, (90), 21 states have return successors, (114), 86 states have call predecessors, (114), 88 states have call successors, (114) [2023-11-23 08:07:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 432 transitions. [2023-11-23 08:07:32,969 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 432 transitions. Word has length 112 [2023-11-23 08:07:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:07:32,969 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 432 transitions. [2023-11-23 08:07:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-23 08:07:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 432 transitions. [2023-11-23 08:07:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:07:32,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:07:32,971 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:07:32,991 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 08:07:33,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:07:33,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:07:33,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:07:33,192 INFO L85 PathProgramCache]: Analyzing trace with hash 585588106, now seen corresponding path program 2 times [2023-11-23 08:07:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:07:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527725598] [2023-11-23 08:07:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:07:33,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:07:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:07:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:07:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:07:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:07:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:07:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:07:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:07:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:07:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:07:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:07:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:07:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:07:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:07:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:07:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:07:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:07:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:07:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527725598] [2023-11-23 08:07:34,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527725598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:07:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607748690] [2023-11-23 08:07:34,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:07:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:07:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:07:34,382 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 08:07:34,384 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 08:07:35,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:07:35,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:07:35,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 08:07:35,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:07:35,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-23 08:07:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 08:07:36,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:07:36,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607748690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:07:36,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:07:36,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-23 08:07:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821725719] [2023-11-23 08:07:36,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:07:36,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:07:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:07:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:07:36,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:07:36,048 INFO L87 Difference]: Start difference. First operand 297 states and 432 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:07:39,062 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 08:07:41,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:43,849 WARN L539 Checker$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 08:07:45,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:48,001 WARN L539 Checker$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 08:07:50,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:52,078 WARN L539 Checker$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 08:07:54,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:56,252 WARN L539 Checker$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 08:07:59,156 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 08:07:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:07:59,450 INFO L93 Difference]: Finished difference Result 463 states and 657 transitions. [2023-11-23 08:07:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:07:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2023-11-23 08:07:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:07:59,455 INFO L225 Difference]: With dead ends: 463 [2023-11-23 08:07:59,455 INFO L226 Difference]: Without dead ends: 335 [2023-11-23 08:07:59,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:07:59,457 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 110 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:07:59,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 971 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 363 Invalid, 10 Unknown, 0 Unchecked, 23.1s Time] [2023-11-23 08:07:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-23 08:07:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 307. [2023-11-23 08:07:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 194 states have (on average 1.2371134020618557) internal successors, (240), 200 states have internal predecessors, (240), 90 states have call successors, (90), 20 states have call predecessors, (90), 22 states have return successors, (98), 86 states have call predecessors, (98), 88 states have call successors, (98) [2023-11-23 08:07:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 428 transitions. [2023-11-23 08:07:59,488 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 428 transitions. Word has length 120 [2023-11-23 08:07:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:07:59,489 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 428 transitions. [2023-11-23 08:07:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:07:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 428 transitions. [2023-11-23 08:07:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 08:07:59,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:07:59,491 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:07:59,512 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 08:07:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:07:59,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:07:59,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:07:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1136544826, now seen corresponding path program 1 times [2023-11-23 08:07:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:07:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158305843] [2023-11-23 08:07:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:07:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:07:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:08:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:08:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:08:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:08:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:08:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:08:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:08:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:08:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:08:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:08:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 08:08:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:08:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:08:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:08:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:08:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 08:08:00,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:08:00,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158305843] [2023-11-23 08:08:00,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158305843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:08:00,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582325415] [2023-11-23 08:08:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:00,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:00,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:00,768 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 08:08:00,770 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 08:08:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:01,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-23 08:08:01,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:01,389 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 10 treesize of output 8 [2023-11-23 08:08:01,468 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 08:08:01,768 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 38 treesize of output 38 [2023-11-23 08:08:01,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2023-11-23 08:08:03,877 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_3| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_2| 8)))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_4|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_1| 8)) .cse0) (not (= .cse0 0))))) is different from true [2023-11-23 08:08:06,020 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_4| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_3| 8)))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_5|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_2| 8)) .cse0) (not (= .cse0 0))))) is different from true [2023-11-23 08:08:08,141 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_5| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset_BEFORE_CALL_4| 8)))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_5| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_6|)) (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.offset_BEFORE_CALL_3| 8)))))) is different from true [2023-11-23 08:08:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 29 not checked. [2023-11-23 08:08:12,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:08:13,010 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 32 treesize of output 26 [2023-11-23 08:08:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 08:08:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582325415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:08:13,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:08:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 13] total 35 [2023-11-23 08:08:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901999879] [2023-11-23 08:08:13,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:08:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 08:08:13,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:08:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 08:08:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=896, Unknown=5, NotChecked=186, Total=1190 [2023-11-23 08:08:13,073 INFO L87 Difference]: Start difference. First operand 307 states and 428 transitions. Second operand has 35 states, 31 states have (on average 4.387096774193548) internal successors, (136), 30 states have internal predecessors, (136), 9 states have call successors, (37), 8 states have call predecessors, (37), 11 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2023-11-23 08:08:15,386 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 08:08:19,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:21,455 WARN L539 Checker$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 08:08:23,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:27,605 WARN L539 Checker$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 08:08:29,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:31,639 WARN L539 Checker$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 08:08:33,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:35,666 WARN L539 Checker$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 08:08:37,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:43,734 WARN L539 Checker$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 08:08:45,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:47,755 WARN L539 Checker$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 08:08:49,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:08:51,777 WARN L539 Checker$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 08:08:59,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:01,860 WARN L539 Checker$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 08:09:03,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:05,865 WARN L539 Checker$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 08:09:11,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:13,926 WARN L539 Checker$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 08:09:15,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:23,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:25,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:28,005 WARN L539 Checker$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 08:09:30,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:32,031 WARN L539 Checker$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 08:09:34,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:36,061 WARN L539 Checker$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 08:09:38,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:40,073 WARN L539 Checker$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 08:09:42,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:44,088 WARN L539 Checker$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 08:09:46,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:54,147 WARN L539 Checker$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 08:09:56,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:09:58,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:00,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:02,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:04,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:06,185 WARN L539 Checker$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 08:10:08,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:10,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:12,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:14,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:16,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:18,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:20,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:28,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:30,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:32,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:34,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:38,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:10:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15