./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_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 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:12:04,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:12:04,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:12:04,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:12:04,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:12:04,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:12:04,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:12:04,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:12:04,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:12:04,938 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:12:04,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:12:04,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:12:04,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:12:04,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:12:04,940 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:12:04,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:12:04,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:12:04,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:12:04,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:12:04,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:12:04,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:12:04,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:12:04,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:12:04,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:12:04,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:12:04,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:12:04,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:12:04,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:12:04,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:12:04,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:12:04,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:12:04,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:12:04,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:12:04,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:12:04,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b61e347701f0c89420e753e852eb314cc29dd4fd4a4715a05b300c448d0ac03 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:12:05,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:12:05,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:12:05,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:12:05,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:12:05,172 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:12:05,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i [2023-11-23 09:12:06,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:12:06,452 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:12:06,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i [2023-11-23 09:12:06,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bb76c22/6d3584e3518c44f980dd9ebd747f3689/FLAGcbce81a01 [2023-11-23 09:12:06,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bb76c22/6d3584e3518c44f980dd9ebd747f3689 [2023-11-23 09:12:06,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:12:06,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:12:06,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:12:06,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:12:06,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:12:06,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:06" (1/1) ... [2023-11-23 09:12:06,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a5a04b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:06, skipping insertion in model container [2023-11-23 09:12:06,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:06" (1/1) ... [2023-11-23 09:12:06,576 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:12:06,722 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i[4487,4500] [2023-11-23 09:12:06,729 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i[4547,4560] [2023-11-23 09:12:07,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,313 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,316 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,316 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:12:07,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:12:07,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:12:07,599 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:12:07,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:12:07,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:12:07,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:12:07,601 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:12:07,601 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:12:07,602 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:12:07,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,789 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:12:07,853 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:12:07,865 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i[4487,4500] [2023-11-23 09:12:07,866 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_harness.i[4547,4560] [2023-11-23 09:12:07,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,913 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,931 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:12:07,931 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:12:07,932 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:12:07,932 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:12:07,933 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:12:07,933 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:12:07,933 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:12:07,934 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:12:07,934 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:12:07,934 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:12:07,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2023-11-23 09:12:07,989 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:07,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:08,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:12:08,158 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,159 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,159 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,159 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,159 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,159 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,160 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,160 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,160 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,160 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,160 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,161 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,161 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,161 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,162 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,162 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,162 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:08,167 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:12:08,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08 WrapperNode [2023-11-23 09:12:08,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:12:08,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:12:08,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:12:08,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:12:08,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,277 INFO L138 Inliner]: procedures = 680, calls = 2275, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 384 [2023-11-23 09:12:08,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:12:08,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:12:08,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:12:08,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:12:08,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:12:08,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:12:08,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:12:08,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:12:08,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (1/1) ... [2023-11-23 09:12:08,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:12:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:08,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 09:12:08,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 09:12:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 09:12:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 09:12:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:12:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:12:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 09:12:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:12:08,399 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:12:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:12:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:12:08,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:12:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:12:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:12:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:12:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:12:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-23 09:12:08,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-23 09:12:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:12:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:12:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:12:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 09:12:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 09:12:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:12:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:12:08,599 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:12:08,600 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:12:08,938 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:12:09,002 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:12:09,003 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 09:12:09,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:09 BoogieIcfgContainer [2023-11-23 09:12:09,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:12:09,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:12:09,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:12:09,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:12:09,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:06" (1/3) ... [2023-11-23 09:12:09,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b61322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:09, skipping insertion in model container [2023-11-23 09:12:09,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:08" (2/3) ... [2023-11-23 09:12:09,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b61322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:09, skipping insertion in model container [2023-11-23 09:12:09,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:09" (3/3) ... [2023-11-23 09:12:09,013 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_harness.i [2023-11-23 09:12:09,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:12:09,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:12:09,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:12:09,088 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;@de43d31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:12:09,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:12:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 55 states have (on average 1.290909090909091) internal successors, (71), 56 states have internal predecessors, (71), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 09:12:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 09:12:09,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:09,100 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:12:09,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:09,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -768232337, now seen corresponding path program 1 times [2023-11-23 09:12:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755117478] [2023-11-23 09:12:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:12:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:12:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 09:12:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755117478] [2023-11-23 09:12:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755117478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:09,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:09,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 09:12:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463476861] [2023-11-23 09:12:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:09,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 09:12:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 09:12:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 09:12:09,614 INFO L87 Difference]: Start difference. First operand has 92 states, 55 states have (on average 1.290909090909091) internal successors, (71), 56 states have internal predecessors, (71), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 09:12:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:09,676 INFO L93 Difference]: Finished difference Result 180 states and 255 transitions. [2023-11-23 09:12:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 09:12:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-11-23 09:12:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:09,689 INFO L225 Difference]: With dead ends: 180 [2023-11-23 09:12:09,689 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 09:12:09,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 09:12:09,701 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:09,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 09:12:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 09:12:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-23 09:12:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 09:12:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2023-11-23 09:12:09,742 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 32 [2023-11-23 09:12:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:09,744 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2023-11-23 09:12:09,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 09:12:09,746 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2023-11-23 09:12:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 09:12:09,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:09,747 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:12:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:12:09,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:09,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2061312465, now seen corresponding path program 1 times [2023-11-23 09:12:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:09,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033942655] [2023-11-23 09:12:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:12:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:12:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 09:12:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033942655] [2023-11-23 09:12:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033942655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:10,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:10,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:12:10,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943306292] [2023-11-23 09:12:10,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:10,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:12:10,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:12:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:12:10,041 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 09:12:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:10,125 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2023-11-23 09:12:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 09:12:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-11-23 09:12:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:10,127 INFO L225 Difference]: With dead ends: 145 [2023-11-23 09:12:10,127 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 09:12:10,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:12:10,131 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 10 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:10,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 317 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 09:12:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 09:12:10,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-23 09:12:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 09:12:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2023-11-23 09:12:10,143 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 32 [2023-11-23 09:12:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:10,143 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2023-11-23 09:12:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 09:12:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2023-11-23 09:12:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 09:12:10,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:10,145 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:10,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 09:12:10,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:10,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1241563347, now seen corresponding path program 1 times [2023-11-23 09:12:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447059685] [2023-11-23 09:12:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:12:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 09:12:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 09:12:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447059685] [2023-11-23 09:12:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447059685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:10,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 09:12:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971938005] [2023-11-23 09:12:10,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:10,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:12:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:10,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:12:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:12:10,739 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:12:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:11,154 INFO L93 Difference]: Finished difference Result 143 states and 187 transitions. [2023-11-23 09:12:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:12:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 61 [2023-11-23 09:12:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:11,157 INFO L225 Difference]: With dead ends: 143 [2023-11-23 09:12:11,158 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 09:12:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:12:11,162 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 59 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:11,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 523 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:12:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 09:12:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-23 09:12:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 54 states have internal predecessors, (64), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 09:12:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2023-11-23 09:12:11,182 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 61 [2023-11-23 09:12:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:11,182 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2023-11-23 09:12:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:12:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2023-11-23 09:12:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 09:12:11,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:11,188 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 09:12:11,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:11,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1137563729, now seen corresponding path program 1 times [2023-11-23 09:12:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:11,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697993491] [2023-11-23 09:12:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:12:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:12:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:12:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 09:12:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697993491] [2023-11-23 09:12:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697993491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:11,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:11,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 09:12:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863301330] [2023-11-23 09:12:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 09:12:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 09:12:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 09:12:11,861 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 09:12:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:12,336 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2023-11-23 09:12:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 09:12:12,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 69 [2023-11-23 09:12:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:12,338 INFO L225 Difference]: With dead ends: 154 [2023-11-23 09:12:12,338 INFO L226 Difference]: Without dead ends: 105 [2023-11-23 09:12:12,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-23 09:12:12,338 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:12,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 524 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:12:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-23 09:12:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2023-11-23 09:12:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 59 states have internal predecessors, (69), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-23 09:12:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2023-11-23 09:12:12,346 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 69 [2023-11-23 09:12:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:12,346 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2023-11-23 09:12:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 09:12:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2023-11-23 09:12:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 09:12:12,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:12,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 09:12:12,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:12,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1944111057, now seen corresponding path program 1 times [2023-11-23 09:12:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603886743] [2023-11-23 09:12:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:12:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:12:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:12:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 09:12:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 09:12:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:14,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603886743] [2023-11-23 09:12:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603886743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:14,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:12:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912598593] [2023-11-23 09:12:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:12:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:12:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:12:14,995 INFO L87 Difference]: Start difference. First operand 96 states and 124 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 09:12:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:15,903 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2023-11-23 09:12:15,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 09:12:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 77 [2023-11-23 09:12:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:15,905 INFO L225 Difference]: With dead ends: 128 [2023-11-23 09:12:15,905 INFO L226 Difference]: Without dead ends: 126 [2023-11-23 09:12:15,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:12:15,905 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 92 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:15,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 664 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 09:12:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-23 09:12:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2023-11-23 09:12:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 09:12:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2023-11-23 09:12:15,916 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 77 [2023-11-23 09:12:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:15,918 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2023-11-23 09:12:15,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 09:12:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2023-11-23 09:12:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 09:12:15,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:15,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:15,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 09:12:15,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 948854844, now seen corresponding path program 1 times [2023-11-23 09:12:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553681034] [2023-11-23 09:12:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:12:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:12:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:12:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 09:12:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 09:12:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:16,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553681034] [2023-11-23 09:12:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553681034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:16,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:16,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:12:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934157257] [2023-11-23 09:12:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:12:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:12:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:12:16,667 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 09:12:17,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:17,293 INFO L93 Difference]: Finished difference Result 133 states and 173 transitions. [2023-11-23 09:12:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:12:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 83 [2023-11-23 09:12:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:17,294 INFO L225 Difference]: With dead ends: 133 [2023-11-23 09:12:17,294 INFO L226 Difference]: Without dead ends: 131 [2023-11-23 09:12:17,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-11-23 09:12:17,295 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 105 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:17,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 745 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:12:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-23 09:12:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2023-11-23 09:12:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2023-11-23 09:12:17,309 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 83 [2023-11-23 09:12:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:17,310 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2023-11-23 09:12:17,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 09:12:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2023-11-23 09:12:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 09:12:17,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:17,312 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:17,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 09:12:17,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:17,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2073044755, now seen corresponding path program 1 times [2023-11-23 09:12:17,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:17,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866109397] [2023-11-23 09:12:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:12:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 09:12:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 09:12:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:12:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 09:12:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866109397] [2023-11-23 09:12:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866109397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620183471] [2023-11-23 09:12:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:17,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:12:17,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 09:12:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:18,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 09:12:18,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:12:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 09:12:18,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:12:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620183471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:18,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:12:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 20 [2023-11-23 09:12:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755181311] [2023-11-23 09:12:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:12:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:12:18,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-11-23 09:12:18,157 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 09:12:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:18,316 INFO L93 Difference]: Finished difference Result 159 states and 203 transitions. [2023-11-23 09:12:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 09:12:18,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 98 [2023-11-23 09:12:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:18,320 INFO L225 Difference]: With dead ends: 159 [2023-11-23 09:12:18,320 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 09:12:18,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2023-11-23 09:12:18,321 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 24 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:18,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1154 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:12:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 09:12:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 09:12:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2023-11-23 09:12:18,337 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 98 [2023-11-23 09:12:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:18,337 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2023-11-23 09:12:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 09:12:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2023-11-23 09:12:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 09:12:18,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:18,341 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:18,359 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 09:12:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:18,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:18,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1278635117, now seen corresponding path program 1 times [2023-11-23 09:12:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483090841] [2023-11-23 09:12:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:12:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 09:12:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 09:12:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:12:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:12:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 09:12:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483090841] [2023-11-23 09:12:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483090841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072821628] [2023-11-23 09:12:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:19,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:19,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:12:19,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 09:12:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:19,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 09:12:19,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:12:19,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 09:12:19,873 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 09:12:19,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 09:12:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 09:12:19,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:12:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072821628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:20,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:12:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2023-11-23 09:12:20,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824055182] [2023-11-23 09:12:20,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:12:20,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 09:12:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 09:12:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:12:20,021 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-23 09:12:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:20,902 INFO L93 Difference]: Finished difference Result 166 states and 212 transitions. [2023-11-23 09:12:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 09:12:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) Word has length 106 [2023-11-23 09:12:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:20,904 INFO L225 Difference]: With dead ends: 166 [2023-11-23 09:12:20,904 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 09:12:20,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2023-11-23 09:12:20,904 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 124 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:20,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 677 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 09:12:20,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 09:12:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2023-11-23 09:12:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2023-11-23 09:12:20,914 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 106 [2023-11-23 09:12:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:20,914 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2023-11-23 09:12:20,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (20), 10 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-23 09:12:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2023-11-23 09:12:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 09:12:20,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:20,915 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:20,934 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 09:12:21,129 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,SelfDestructingSolverStorable7 [2023-11-23 09:12:21,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1009338411, now seen corresponding path program 1 times [2023-11-23 09:12:21,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:21,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260229891] [2023-11-23 09:12:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:12:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 09:12:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 09:12:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:12:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:12:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 09:12:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260229891] [2023-11-23 09:12:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260229891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:21,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:21,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:12:21,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738747671] [2023-11-23 09:12:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:21,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:12:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:12:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:12:21,751 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 09:12:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:22,236 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2023-11-23 09:12:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:12:22,236 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) Word has length 107 [2023-11-23 09:12:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:22,237 INFO L225 Difference]: With dead ends: 166 [2023-11-23 09:12:22,237 INFO L226 Difference]: Without dead ends: 117 [2023-11-23 09:12:22,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-11-23 09:12:22,238 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 70 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:22,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 551 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:12:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-23 09:12:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-23 09:12:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.125) internal successors, (81), 74 states have internal predecessors, (81), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2023-11-23 09:12:22,246 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 107 [2023-11-23 09:12:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:22,247 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2023-11-23 09:12:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 09:12:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2023-11-23 09:12:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 09:12:22,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:22,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1] [2023-11-23 09:12:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 09:12:22,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:22,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2018394021, now seen corresponding path program 1 times [2023-11-23 09:12:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905679034] [2023-11-23 09:12:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:12:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:12:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:12:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 09:12:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 09:12:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 09:12:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 09:12:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905679034] [2023-11-23 09:12:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905679034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047481514] [2023-11-23 09:12:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:25,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:12:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 09:12:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:26,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-23 09:12:26,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:12:26,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2023-11-23 09:12:26,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:12:26,134 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 24 treesize of output 16 [2023-11-23 09:12:26,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:12:26,148 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 09:12:26,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:12:26,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-23 09:12:44,793 WARN L293 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 552 DAG size of output: 356 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 09:12:44,820 INFO L349 Elim1Store]: treesize reduction 984, result has 44.6 percent of original size [2023-11-23 09:12:44,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 29 new quantified variables, introduced 171 case distinctions, treesize of input 455 treesize of output 1080 [2023-11-23 09:13:37,758 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:57,941 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:05,148 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:11,733 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:13,969 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:14,895 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:15,291 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:15,429 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:15,528 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:14:16,017 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:16,756 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:18,514 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:33,387 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:15:31,785 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:15:54,325 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15