./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:50:54,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:50:54,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:50:54,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:50:54,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:50:54,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:50:54,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:50:54,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:50:54,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:50:54,211 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:50:54,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:50:54,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:50:54,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:50:54,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:50:54,214 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:50:54,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:50:54,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:50:54,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:50:54,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:50:54,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:50:54,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:50:54,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:50:54,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:50:54,216 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:50:54,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:50:54,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:50:54,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:50:54,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:50:54,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:50:54,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:50:54,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:50:54,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:50:54,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:50:54,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:50:54,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:50:54,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:50:54,221 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:50:54,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:50:54,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:50:54,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:50:54,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:50:54,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:50:54,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:50:54,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:50:54,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:50:54,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:50:55,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:50:56,359 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:50:56,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:50:56,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a92cf80/e62615723bc7444faf9a4b2111c0bc9f/FLAG6951d2d6b [2023-11-23 08:50:56,443 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a92cf80/e62615723bc7444faf9a4b2111c0bc9f [2023-11-23 08:50:56,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:50:56,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:50:56,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:50:56,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:50:56,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:50:56,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:50:56" (1/1) ... [2023-11-23 08:50:56,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fde7b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:56, skipping insertion in model container [2023-11-23 08:50:56,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:50:56" (1/1) ... [2023-11-23 08:50:56,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:50:56,894 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 08:50:56,902 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 08:50:57,483 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,484 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,496 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,498 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,502 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:57,887 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:50:57,888 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:50:57,898 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:50:57,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:50:57,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:50:57,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:50:57,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:50:57,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:50:57,903 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:50:57,903 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:50:58,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:50:58,136 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:50:58,148 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 08:50:58,148 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 08:50:58,178 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,179 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,180 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,189 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:50:58,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:50:58,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:50:58,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:50:58,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:50:58,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:50:58,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:50:58,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:50:58,226 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:50:58,226 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:50:58,226 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:50:58,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:50:58,559 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,560 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,560 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,560 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,560 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,560 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,561 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,561 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,562 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,562 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,562 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,563 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,563 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,563 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,563 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:50:58,569 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:50:58,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58 WrapperNode [2023-11-23 08:50:58,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:50:58,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:50:58,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:50:58,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:50:58,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,702 INFO L138 Inliner]: procedures = 678, calls = 1032, calls flagged for inlining = 48, calls inlined = 3, statements flattened = 27 [2023-11-23 08:50:58,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:50:58,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:50:58,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:50:58,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:50:58,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,739 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:50:58,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:50:58,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:50:58,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:50:58,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (1/1) ... [2023-11-23 08:50:58,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:50:58,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:50:58,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:50:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:50:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2023-11-23 08:50:58,861 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2023-11-23 08:50:58,861 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:50:58,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:50:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:50:58,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:50:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 08:50:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 08:50:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:50:58,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:50:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:50:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:50:58,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:50:59,103 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:50:59,105 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:50:59,214 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:50:59,250 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:50:59,252 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 08:50:59,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:50:59 BoogieIcfgContainer [2023-11-23 08:50:59,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:50:59,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:50:59,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:50:59,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:50:59,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:50:56" (1/3) ... [2023-11-23 08:50:59,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8472e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:50:59, skipping insertion in model container [2023-11-23 08:50:59,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:50:58" (2/3) ... [2023-11-23 08:50:59,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8472e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:50:59, skipping insertion in model container [2023-11-23 08:50:59,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:50:59" (3/3) ... [2023-11-23 08:50:59,259 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:50:59,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:50:59,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:50:59,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:50:59,326 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;@7e356c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:50:59,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:50:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 08:50:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 08:50:59,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:50:59,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:50:59,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:50:59,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:50:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash 47534750, now seen corresponding path program 1 times [2023-11-23 08:50:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:50:59,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530997302] [2023-11-23 08:50:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:50:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:50:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:50:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:50:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:50:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:50:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:50:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:50:59,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:50:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530997302] [2023-11-23 08:50:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530997302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:50:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:50:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:50:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931803838] [2023-11-23 08:50:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:50:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:50:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:50:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:50:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:50:59,812 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 08:50:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:50:59,855 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-11-23 08:50:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:50:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-23 08:50:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:50:59,868 INFO L225 Difference]: With dead ends: 62 [2023-11-23 08:50:59,868 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 08:50:59,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 08:50:59,874 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:50:59,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:50:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 08:50:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 08:50:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 08:50:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-23 08:50:59,911 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2023-11-23 08:50:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:50:59,912 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-23 08:50:59,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 08:50:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-23 08:50:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 08:50:59,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:50:59,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:50:59,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:50:59,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:50:59,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:50:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash -434451929, now seen corresponding path program 1 times [2023-11-23 08:50:59,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:50:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944463128] [2023-11-23 08:50:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:50:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:50:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:51:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:00,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:00,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944463128] [2023-11-23 08:51:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944463128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:51:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323068384] [2023-11-23 08:51:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:00,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:51:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:51:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:51:00,518 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:00,736 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2023-11-23 08:51:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:51:00,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-23 08:51:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:00,739 INFO L225 Difference]: With dead ends: 52 [2023-11-23 08:51:00,739 INFO L226 Difference]: Without dead ends: 50 [2023-11-23 08:51:00,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:51:00,741 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:00,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 67 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-23 08:51:00,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2023-11-23 08:51:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-11-23 08:51:00,751 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2023-11-23 08:51:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:00,752 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-11-23 08:51:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-11-23 08:51:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 08:51:00,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:00,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 08:51:00,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:00,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2002514128, now seen corresponding path program 1 times [2023-11-23 08:51:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583575879] [2023-11-23 08:51:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 08:51:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:00,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583575879] [2023-11-23 08:51:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583575879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:00,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:51:00,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133593676] [2023-11-23 08:51:00,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:51:00,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:51:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:51:00,970 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 08:51:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:01,080 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2023-11-23 08:51:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:51:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-23 08:51:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:01,083 INFO L225 Difference]: With dead ends: 68 [2023-11-23 08:51:01,083 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 08:51:01,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:51:01,088 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:01,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 43 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 08:51:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-23 08:51:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-11-23 08:51:01,109 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2023-11-23 08:51:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:01,109 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-11-23 08:51:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 08:51:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-11-23 08:51:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 08:51:01,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:01,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 08:51:01,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:01,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash 749484950, now seen corresponding path program 1 times [2023-11-23 08:51:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790697024] [2023-11-23 08:51:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:51:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:01,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790697024] [2023-11-23 08:51:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790697024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864813828] [2023-11-23 08:51:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:01,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:01,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:01,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:51:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:01,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:51:01,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:01,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864813828] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:01,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:01,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 11 [2023-11-23 08:51:01,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125490553] [2023-11-23 08:51:01,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:01,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:51:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:51:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:51:01,679 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:01,719 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2023-11-23 08:51:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:51:01,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-23 08:51:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:01,720 INFO L225 Difference]: With dead ends: 63 [2023-11-23 08:51:01,721 INFO L226 Difference]: Without dead ends: 41 [2023-11-23 08:51:01,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:51:01,723 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:01,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-23 08:51:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-23 08:51:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.16) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-11-23 08:51:01,749 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 25 [2023-11-23 08:51:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:01,749 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-11-23 08:51:01,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-11-23 08:51:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 08:51:01,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:01,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:01,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:01,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:01,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1460273314, now seen corresponding path program 1 times [2023-11-23 08:51:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:01,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353185621] [2023-11-23 08:51:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:51:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:02,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353185621] [2023-11-23 08:51:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353185621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844154268] [2023-11-23 08:51:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:02,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:02,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:02,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:02,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:51:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:02,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:51:02,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:02,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844154268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:02,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:02,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-23 08:51:02,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591019649] [2023-11-23 08:51:02,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:02,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:51:02,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:51:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:51:02,796 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:03,001 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2023-11-23 08:51:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:51:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-23 08:51:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:03,004 INFO L225 Difference]: With dead ends: 74 [2023-11-23 08:51:03,004 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 08:51:03,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:51:03,005 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:03,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 08:51:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 08:51:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-23 08:51:03,014 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 27 [2023-11-23 08:51:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:03,014 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-23 08:51:03,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.875) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-23 08:51:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 08:51:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:03,015 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:03,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:03,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:03,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 539090748, now seen corresponding path program 2 times [2023-11-23 08:51:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:03,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946127948] [2023-11-23 08:51:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:03,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:03,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 08:51:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:03,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946127948] [2023-11-23 08:51:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946127948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:03,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760989462] [2023-11-23 08:51:03,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:51:03,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:03,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:03,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:03,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:51:04,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:51:04,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:04,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 08:51:04,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 08:51:04,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 08:51:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760989462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:04,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 17 [2023-11-23 08:51:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128372910] [2023-11-23 08:51:04,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:04,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 08:51:04,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 08:51:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:51:04,267 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:04,894 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-23 08:51:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:51:04,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 30 [2023-11-23 08:51:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:04,896 INFO L225 Difference]: With dead ends: 92 [2023-11-23 08:51:04,896 INFO L226 Difference]: Without dead ends: 57 [2023-11-23 08:51:04,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:51:04,897 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:04,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 109 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:51:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-23 08:51:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2023-11-23 08:51:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-23 08:51:04,912 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 30 [2023-11-23 08:51:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:04,913 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-23 08:51:04,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-23 08:51:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 08:51:04,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:04,933 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:04,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:05,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:05,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:05,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash -4479930, now seen corresponding path program 3 times [2023-11-23 08:51:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702638168] [2023-11-23 08:51:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:05,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 08:51:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:51:05,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:05,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702638168] [2023-11-23 08:51:05,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702638168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:05,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323433228] [2023-11-23 08:51:05,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:51:05,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:05,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:06,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:06,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:51:06,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 08:51:06,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:06,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 08:51:06,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:51:06,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:51:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323433228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:07,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-11-23 08:51:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708274936] [2023-11-23 08:51:07,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:07,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 08:51:07,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 08:51:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-11-23 08:51:07,217 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:07,995 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2023-11-23 08:51:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 08:51:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-11-23 08:51:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:07,997 INFO L225 Difference]: With dead ends: 94 [2023-11-23 08:51:07,997 INFO L226 Difference]: Without dead ends: 58 [2023-11-23 08:51:07,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=634, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:51:07,999 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:07,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 97 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:51:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-23 08:51:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-23 08:51:08,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-11-23 08:51:08,012 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2023-11-23 08:51:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:08,012 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-11-23 08:51:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-11-23 08:51:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 08:51:08,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:08,017 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:08,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:08,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:08,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:08,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1333883872, now seen corresponding path program 4 times [2023-11-23 08:51:08,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162297699] [2023-11-23 08:51:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:51:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 08:51:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162297699] [2023-11-23 08:51:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162297699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483307924] [2023-11-23 08:51:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:51:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:09,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:09,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:51:09,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:51:09,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:09,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:51:09,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 08:51:10,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 08:51:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483307924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:10,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 8] total 34 [2023-11-23 08:51:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183537555] [2023-11-23 08:51:10,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:10,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 08:51:10,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 08:51:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 08:51:10,302 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:12,072 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2023-11-23 08:51:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 08:51:12,073 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2023-11-23 08:51:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:12,074 INFO L225 Difference]: With dead ends: 130 [2023-11-23 08:51:12,074 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 08:51:12,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=350, Invalid=3310, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 08:51:12,077 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 144 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:12,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 152 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:51:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 08:51:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 71. [2023-11-23 08:51:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2023-11-23 08:51:12,095 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 44 [2023-11-23 08:51:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:12,095 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2023-11-23 08:51:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2023-11-23 08:51:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 08:51:12,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:12,097 INFO L195 NwaCegarLoop]: trace histogram [13, 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] [2023-11-23 08:51:12,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:12,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:12,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:12,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1655257238, now seen corresponding path program 1 times [2023-11-23 08:51:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874311219] [2023-11-23 08:51:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:51:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:51:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 08:51:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:51:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:51:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 08:51:12,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874311219] [2023-11-23 08:51:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874311219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:12,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:12,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:51:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739219085] [2023-11-23 08:51:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:51:12,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:51:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:51:12,743 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 08:51:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:12,884 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-11-23 08:51:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:51:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 50 [2023-11-23 08:51:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:12,888 INFO L225 Difference]: With dead ends: 78 [2023-11-23 08:51:12,888 INFO L226 Difference]: Without dead ends: 71 [2023-11-23 08:51:12,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:51:12,890 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:12,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 69 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-23 08:51:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-23 08:51:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 57 states have internal predecessors, (68), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 08:51:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2023-11-23 08:51:12,912 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 50 [2023-11-23 08:51:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:12,912 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2023-11-23 08:51:12,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 08:51:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2023-11-23 08:51:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 08:51:12,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:12,914 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:12,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:51:12,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:12,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1408756366, now seen corresponding path program 5 times [2023-11-23 08:51:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:12,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310473631] [2023-11-23 08:51:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 08:51:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-23 08:51:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310473631] [2023-11-23 08:51:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310473631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110367225] [2023-11-23 08:51:13,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:51:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:13,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:13,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:51:17,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-23 08:51:17,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:17,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 08:51:17,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 08:51:18,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 08:51:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110367225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:19,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:19,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 14] total 53 [2023-11-23 08:51:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373877576] [2023-11-23 08:51:19,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:19,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-23 08:51:19,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-23 08:51:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 08:51:19,447 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:23,851 INFO L93 Difference]: Finished difference Result 167 states and 207 transitions. [2023-11-23 08:51:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 08:51:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-23 08:51:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:23,853 INFO L225 Difference]: With dead ends: 167 [2023-11-23 08:51:23,853 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 08:51:23,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=647, Invalid=6835, Unknown=0, NotChecked=0, Total=7482 [2023-11-23 08:51:23,858 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 280 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:23,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 339 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 08:51:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 08:51:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2023-11-23 08:51:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 70 states have internal predecessors, (87), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 08:51:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2023-11-23 08:51:23,870 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 57 [2023-11-23 08:51:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:23,871 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2023-11-23 08:51:23,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 52 states have internal predecessors, (98), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 08:51:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2023-11-23 08:51:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 08:51:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:23,872 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:23,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:24,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:24,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash -668960464, now seen corresponding path program 6 times [2023-11-23 08:51:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129929369] [2023-11-23 08:51:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:51:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:51:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 08:51:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:51:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:51:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129929369] [2023-11-23 08:51:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129929369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:51:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068641692] [2023-11-23 08:51:25,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 08:51:25,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:25,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:25,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:51:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:51:41,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-11-23 08:51:41,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:41,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 08:51:41,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:51:42,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:51:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068641692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:42,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:51:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2023-11-23 08:51:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158327602] [2023-11-23 08:51:42,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:42,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-23 08:51:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:51:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-23 08:51:42,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 08:51:42,720 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:43,229 INFO L93 Difference]: Finished difference Result 146 states and 185 transitions. [2023-11-23 08:51:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 08:51:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2023-11-23 08:51:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:43,231 INFO L225 Difference]: With dead ends: 146 [2023-11-23 08:51:43,231 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 08:51:43,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=471, Invalid=2285, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 08:51:43,233 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:43,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 185 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:51:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 08:51:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-23 08:51:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 08:51:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2023-11-23 08:51:43,247 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 70 [2023-11-23 08:51:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:43,247 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2023-11-23 08:51:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 08:51:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2023-11-23 08:51:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 08:51:43,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:43,248 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:43,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 08:51:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:51:43,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:43,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1089320432, now seen corresponding path program 7 times [2023-11-23 08:51:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:51:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949788215] [2023-11-23 08:51:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:43,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:51:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 08:51:43,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 08:51:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 08:51:43,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 08:51:43,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 08:51:43,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 08:51:43,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 08:51:43,757 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2023-11-23 08:51:43,760 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 08:51:43,783 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res299 [2023-11-23 08:51:43,785 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,785 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,786 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,786 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,787 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,787 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,788 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,788 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,789 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,789 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,789 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,790 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,790 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,791 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,791 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,792 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:51:43,793 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret300 could not be translated [2023-11-23 08:51:43,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:51:43 BoogieIcfgContainer [2023-11-23 08:51:43,804 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 08:51:43,805 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 08:51:43,805 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 08:51:43,808 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 08:51:43,808 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:50:59" (3/4) ... [2023-11-23 08:51:43,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 08:51:43,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 08:51:43,812 INFO L158 Benchmark]: Toolchain (without parser) took 47364.10ms. Allocated memory was 184.5MB in the beginning and 406.8MB in the end (delta: 222.3MB). Free memory was 106.6MB in the beginning and 195.2MB in the end (delta: -88.5MB). Peak memory consumption was 136.2MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,812 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 08:51:43,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2121.67ms. Allocated memory is still 184.5MB. Free memory was 106.4MB in the beginning and 117.4MB in the end (delta: -11.0MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 131.42ms. Allocated memory is still 184.5MB. Free memory was 117.4MB in the beginning and 112.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,813 INFO L158 Benchmark]: Boogie Preprocessor took 66.71ms. Allocated memory is still 184.5MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,813 INFO L158 Benchmark]: RCFGBuilder took 482.39ms. Allocated memory is still 184.5MB. Free memory was 109.9MB in the beginning and 91.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,814 INFO L158 Benchmark]: TraceAbstraction took 44549.70ms. Allocated memory was 184.5MB in the beginning and 406.8MB in the end (delta: 222.3MB). Free memory was 91.1MB in the beginning and 195.2MB in the end (delta: -104.1MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. [2023-11-23 08:51:43,814 INFO L158 Benchmark]: Witness Printer took 6.48ms. Allocated memory is still 406.8MB. Free memory is still 195.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 08:51:43,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2121.67ms. Allocated memory is still 184.5MB. Free memory was 106.4MB in the beginning and 117.4MB in the end (delta: -11.0MB). Peak memory consumption was 72.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 131.42ms. Allocated memory is still 184.5MB. Free memory was 117.4MB in the beginning and 112.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.71ms. Allocated memory is still 184.5MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.39ms. Allocated memory is still 184.5MB. Free memory was 109.9MB in the beginning and 91.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 44549.70ms. Allocated memory was 184.5MB in the beginning and 406.8MB in the end (delta: 222.3MB). Free memory was 91.1MB in the beginning and 195.2MB in the end (delta: -104.1MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. * Witness Printer took 6.48ms. Allocated memory is still 406.8MB. Free memory is still 195.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res299 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret300 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_real at line -1. Possible FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7354] CALL aws_linked_list_node_reset_harness() [L7346] struct aws_linked_list_node node; VAL [node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] CALL aws_linked_list_node_reset(&node) VAL [node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] CALL assume_abort_if_not((node != ((void *)0) )) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] RET assume_abort_if_not((node != ((void *)0) )) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4678] FCALL memset(&(*node), 0, sizeof(*node)) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [\old(bufsize)=16, buf={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND FALSE !(i < bufsize) VAL [\old(bufsize)=16, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2345-L2347] return 1 ; VAL [\old(bufsize)=16, \result=1, buf={17:0}, buf={17:0}, buf_u8={17:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] RET, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [node={17:0}, node={17:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL __VERIFIER_assert(!((aws_is_mem_zeroed(&(*node), sizeof(*node))))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.5s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 630 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 617 mSDsluCounter, 1227 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1031 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5686 IncrementalHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 196 mSDtfsCounter, 5686 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 853 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=11, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 21.0s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 769 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 962 ConstructedInterpolants, 0 QuantifiedInterpolants, 3101 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2245 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 1248/2171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 08:51:43,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_linked_list_node_reset_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:51:46,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:51:46,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-23 08:51:46,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:51:46,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:51:46,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:51:46,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:51:46,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:51:46,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:51:46,436 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:51:46,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:51:46,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:51:46,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:51:46,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:51:46,438 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:51:46,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:51:46,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:51:46,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:51:46,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:51:46,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:51:46,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:51:46,441 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 08:51:46,441 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 08:51:46,442 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 08:51:46,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:51:46,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:51:46,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:51:46,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:51:46,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:51:46,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:51:46,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:51:46,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:51:46,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:51:46,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:51:46,445 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 08:51:46,446 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 08:51:46,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:51:46,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:51:46,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:51:46,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:51:46,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:51:46,448 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 08:51:46,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffe7dc3796a4a9701489a5d25872cb383fb67dd99ba4e6c6a2b93eeb65a9a3ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:51:46,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:51:46,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:51:46,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:51:46,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:51:46,801 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:51:46,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:51:48,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:51:48,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:51:48,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:51:48,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8038c1ff7/8cdc500dc6904744b49f9f02fe8393fd/FLAG8a7c64a71 [2023-11-23 08:51:48,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8038c1ff7/8cdc500dc6904744b49f9f02fe8393fd [2023-11-23 08:51:48,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:51:48,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:51:48,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:51:48,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:51:48,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:51:48,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:51:48" (1/1) ... [2023-11-23 08:51:48,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a37dea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:48, skipping insertion in model container [2023-11-23 08:51:48,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:51:48" (1/1) ... [2023-11-23 08:51:48,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:51:48,886 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 08:51:48,894 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 08:51:49,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,556 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,557 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,558 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,559 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,560 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,561 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,562 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,562 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:49,896 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:51:49,897 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:51:49,898 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:51:49,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:51:49,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:51:49,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:51:49,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:51:49,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:51:49,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:51:49,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:51:50,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:51:50,180 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 08:51:50,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:51:50,223 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 08:51:50,224 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 08:51:50,271 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,272 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,273 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,274 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,295 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,298 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,336 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:51:50,336 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:51:50,337 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:51:50,337 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:51:50,343 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:51:50,343 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:51:50,344 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:51:50,345 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:51:50,345 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:51:50,346 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:51:50,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:51:50,404 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:51:50,422 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_linked_list_node_reset_harness_negated.i[4500,4513] [2023-11-23 08:51:50,423 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_linked_list_node_reset_harness_negated.i[4560,4573] [2023-11-23 08:51:50,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,469 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,486 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,487 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:51:50,519 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:51:50,519 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:51:50,520 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:51:50,520 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:51:50,520 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:51:50,521 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:51:50,521 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:51:50,521 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:51:50,523 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:51:50,524 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:51:50,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:51:50,790 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,790 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,790 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,790 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,791 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,791 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,791 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,791 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,791 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,792 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:51:50,805 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:51:50,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50 WrapperNode [2023-11-23 08:51:50,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:51:50,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:51:50,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:51:50,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:51:50,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,925 INFO L138 Inliner]: procedures = 697, calls = 1032, calls flagged for inlining = 48, calls inlined = 3, statements flattened = 28 [2023-11-23 08:51:50,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:51:50,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:51:50,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:51:50,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:51:50,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:51:50,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:51:50,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:51:50,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:51:50,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (1/1) ... [2023-11-23 08:51:50,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:51:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:51:51,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:51:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:51:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2023-11-23 08:51:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2023-11-23 08:51:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:51:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:51:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:51:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 08:51:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:51:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:51:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:51:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:51:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:51:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 08:51:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 08:51:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 08:51:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:51:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:51:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:51:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:51:51,336 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:51:51,339 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:51:51,484 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:51:51,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:51:51,520 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 08:51:51,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:51:51 BoogieIcfgContainer [2023-11-23 08:51:51,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:51:51,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:51:51,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:51:51,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:51:51,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:51:48" (1/3) ... [2023-11-23 08:51:51,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0e3723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:51:51, skipping insertion in model container [2023-11-23 08:51:51,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:51:50" (2/3) ... [2023-11-23 08:51:51,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0e3723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:51:51, skipping insertion in model container [2023-11-23 08:51:51,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:51:51" (3/3) ... [2023-11-23 08:51:51,540 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness_negated.i [2023-11-23 08:51:51,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:51:51,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:51:51,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:51:51,617 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;@fb07f83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:51:51,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:51:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 08:51:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 08:51:51,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:51,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:51,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 47534750, now seen corresponding path program 1 times [2023-11-23 08:51:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:51,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042923554] [2023-11-23 08:51:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:51,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:51,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:51,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:51,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 08:51:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:51,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 08:51:51,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:51,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:51,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042923554] [2023-11-23 08:51:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042923554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 08:51:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674617235] [2023-11-23 08:51:51,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:51,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 08:51:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 08:51:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 08:51:51,854 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 08:51:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:51,886 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2023-11-23 08:51:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 08:51:51,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-23 08:51:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:51,894 INFO L225 Difference]: With dead ends: 62 [2023-11-23 08:51:51,894 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 08:51:51,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 08:51:51,899 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:51,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 08:51:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 08:51:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 08:51:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-23 08:51:51,930 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2023-11-23 08:51:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:51,931 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-23 08:51:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 08:51:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-23 08:51:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 08:51:51,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:51,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:51,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:52,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:52,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -434451929, now seen corresponding path program 1 times [2023-11-23 08:51:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919713287] [2023-11-23 08:51:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:52,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:52,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:52,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:52,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 08:51:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:51:52,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:52,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:52,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919713287] [2023-11-23 08:51:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919713287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:52,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:51:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490607864] [2023-11-23 08:51:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:51:52,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:51:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:51:52,369 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 08:51:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:52,429 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-23 08:51:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:51:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-23 08:51:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:52,431 INFO L225 Difference]: With dead ends: 54 [2023-11-23 08:51:52,431 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 08:51:52,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:51:52,433 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:52,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 08:51:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 08:51:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 08:51:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-11-23 08:51:52,480 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2023-11-23 08:51:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:52,480 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-11-23 08:51:52,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 08:51:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-11-23 08:51:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 08:51:52,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:52,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:52,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:52,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:52,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1977420147, now seen corresponding path program 1 times [2023-11-23 08:51:52,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87706705] [2023-11-23 08:51:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:52,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:52,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:52,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 08:51:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:52,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 08:51:52,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:52,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:52,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87706705] [2023-11-23 08:51:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87706705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:52,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 08:51:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816935544] [2023-11-23 08:51:52,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:52,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:51:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:51:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:51:52,929 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:53,049 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-11-23 08:51:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:51:53,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2023-11-23 08:51:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:53,051 INFO L225 Difference]: With dead ends: 58 [2023-11-23 08:51:53,051 INFO L226 Difference]: Without dead ends: 36 [2023-11-23 08:51:53,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:51:53,053 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:53,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-23 08:51:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-23 08:51:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 08:51:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-11-23 08:51:53,060 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2023-11-23 08:51:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:53,060 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-11-23 08:51:53,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-11-23 08:51:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 08:51:53,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:53,061 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:53,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:53,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:53,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:53,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1124748377, now seen corresponding path program 2 times [2023-11-23 08:51:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496929015] [2023-11-23 08:51:53,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:51:53,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:53,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:53,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:53,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 08:51:53,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:51:53,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:53,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:51:53,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 08:51:53,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:53,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496929015] [2023-11-23 08:51:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496929015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:53,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:51:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932054600] [2023-11-23 08:51:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:53,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:51:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:51:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:51:53,430 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:53,490 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2023-11-23 08:51:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:51:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-23 08:51:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:53,493 INFO L225 Difference]: With dead ends: 46 [2023-11-23 08:51:53,493 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 08:51:53,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:51:53,494 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:53,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 08:51:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-11-23 08:51:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-23 08:51:53,502 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2023-11-23 08:51:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:53,503 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-23 08:51:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 08:51:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 08:51:53,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:53,504 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:53,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:53,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:53,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:53,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:53,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1602156720, now seen corresponding path program 1 times [2023-11-23 08:51:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:53,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969780728] [2023-11-23 08:51:53,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:53,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:53,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:53,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:53,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 08:51:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:53,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:51:53,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:53,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 08:51:54,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969780728] [2023-11-23 08:51:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969780728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:54,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 08:51:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058151038] [2023-11-23 08:51:54,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:51:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:51:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:51:54,116 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:54,646 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2023-11-23 08:51:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:51:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-11-23 08:51:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:54,647 INFO L225 Difference]: With dead ends: 78 [2023-11-23 08:51:54,647 INFO L226 Difference]: Without dead ends: 49 [2023-11-23 08:51:54,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:51:54,649 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:54,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 236 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:51:54,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-23 08:51:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-23 08:51:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-23 08:51:54,657 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 28 [2023-11-23 08:51:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:54,657 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-23 08:51:54,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-23 08:51:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 08:51:54,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:54,658 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:54,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:54,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:54,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:54,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1607855856, now seen corresponding path program 2 times [2023-11-23 08:51:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992325616] [2023-11-23 08:51:54,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:51:54,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:54,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:54,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:54,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 08:51:55,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:51:55,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:55,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 08:51:55,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 08:51:55,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:51:55,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992325616] [2023-11-23 08:51:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992325616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:51:55,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:51:55,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:51:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582806340] [2023-11-23 08:51:55,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:51:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:51:55,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:51:55,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:51:55,047 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:55,111 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2023-11-23 08:51:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:51:55,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-11-23 08:51:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:55,112 INFO L225 Difference]: With dead ends: 75 [2023-11-23 08:51:55,113 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 08:51:55,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:51:55,113 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:55,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 08:51:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 08:51:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2023-11-23 08:51:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-11-23 08:51:55,121 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 34 [2023-11-23 08:51:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:55,121 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-11-23 08:51:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 08:51:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-11-23 08:51:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 08:51:55,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:55,123 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:55,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:55,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:55,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1720993148, now seen corresponding path program 1 times [2023-11-23 08:51:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860894259] [2023-11-23 08:51:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:51:55,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:55,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:55,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:55,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 08:51:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:51:55,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 08:51:55,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:55,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 08:51:56,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:56,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860894259] [2023-11-23 08:51:56,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860894259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:56,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:56,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 08:51:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670943842] [2023-11-23 08:51:56,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:56,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 08:51:56,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 08:51:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:51:56,595 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:57,487 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2023-11-23 08:51:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 08:51:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-23 08:51:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:57,493 INFO L225 Difference]: With dead ends: 86 [2023-11-23 08:51:57,493 INFO L226 Difference]: Without dead ends: 56 [2023-11-23 08:51:57,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:51:57,494 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:57,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 411 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:51:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-23 08:51:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-23 08:51:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2023-11-23 08:51:57,504 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 36 [2023-11-23 08:51:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:57,504 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2023-11-23 08:51:57,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 26 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 08:51:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2023-11-23 08:51:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 08:51:57,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:57,505 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:57,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-23 08:51:57,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:57,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:57,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2068776004, now seen corresponding path program 2 times [2023-11-23 08:51:57,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:57,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923226304] [2023-11-23 08:51:57,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:51:57,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:57,720 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:57,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 08:51:57,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:51:57,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:57,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:51:57,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:51:57,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:51:58,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:58,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923226304] [2023-11-23 08:51:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923226304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:58,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:58,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 08:51:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352626814] [2023-11-23 08:51:58,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:58,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:51:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:51:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:51:58,088 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:51:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:51:58,240 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2023-11-23 08:51:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:51:58,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-11-23 08:51:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:51:58,242 INFO L225 Difference]: With dead ends: 94 [2023-11-23 08:51:58,242 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 08:51:58,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:51:58,243 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:51:58,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 120 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:51:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 08:51:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2023-11-23 08:51:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:51:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-11-23 08:51:58,252 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 42 [2023-11-23 08:51:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:51:58,253 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-11-23 08:51:58,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:51:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-11-23 08:51:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 08:51:58,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:51:58,254 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:51:58,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:51:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:58,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:51:58,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:51:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1186423456, now seen corresponding path program 3 times [2023-11-23 08:51:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:51:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678339312] [2023-11-23 08:51:58,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:51:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:51:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:51:58,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:51:58,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 08:51:58,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-23 08:51:58,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:51:58,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:51:58,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:51:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:51:58,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:51:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:51:59,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:51:59,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678339312] [2023-11-23 08:51:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678339312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:51:59,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:51:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-23 08:51:59,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243046691] [2023-11-23 08:51:59,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:51:59,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:51:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:51:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:51:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:51:59,329 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:52:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:00,994 INFO L93 Difference]: Finished difference Result 124 states and 160 transitions. [2023-11-23 08:52:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:52:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-23 08:52:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:00,996 INFO L225 Difference]: With dead ends: 124 [2023-11-23 08:52:00,996 INFO L226 Difference]: Without dead ends: 92 [2023-11-23 08:52:00,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:52:00,997 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 66 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:00,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 270 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:52:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-23 08:52:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2023-11-23 08:52:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 08:52:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-11-23 08:52:01,009 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 48 [2023-11-23 08:52:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:01,010 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-11-23 08:52:01,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:52:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-11-23 08:52:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 08:52:01,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:01,012 INFO L195 NwaCegarLoop]: trace histogram [16, 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] [2023-11-23 08:52:01,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:01,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:01,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2100632464, now seen corresponding path program 1 times [2023-11-23 08:52:01,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:52:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453726155] [2023-11-23 08:52:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:52:01,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:01,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:52:01,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:52:01,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 08:52:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:52:01,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:52:01,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 08:52:01,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:52:01,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:52:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453726155] [2023-11-23 08:52:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453726155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:52:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:52:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:52:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511049110] [2023-11-23 08:52:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:52:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:52:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:52:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:52:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:52:01,561 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 08:52:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:01,643 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2023-11-23 08:52:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:52:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2023-11-23 08:52:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:01,644 INFO L225 Difference]: With dead ends: 81 [2023-11-23 08:52:01,645 INFO L226 Difference]: Without dead ends: 74 [2023-11-23 08:52:01,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:52:01,645 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:01,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 155 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:52:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-23 08:52:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-23 08:52:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 08:52:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2023-11-23 08:52:01,657 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 53 [2023-11-23 08:52:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:01,658 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2023-11-23 08:52:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 08:52:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2023-11-23 08:52:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 08:52:01,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:01,663 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:01,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:01,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:01,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:01,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -864043096, now seen corresponding path program 4 times [2023-11-23 08:52:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:52:01,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260851045] [2023-11-23 08:52:01,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:52:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:52:01,876 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:52:01,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 08:52:02,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:52:02,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:52:02,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 08:52:02,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:52:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:52:02,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:52:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 08:52:03,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 08:52:03,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260851045] [2023-11-23 08:52:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260851045] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:52:03,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:52:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 08:52:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563586371] [2023-11-23 08:52:03,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:52:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 08:52:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 08:52:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 08:52:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-23 08:52:03,849 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:52:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:52:05,296 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2023-11-23 08:52:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 08:52:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2023-11-23 08:52:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:52:05,299 INFO L225 Difference]: With dead ends: 160 [2023-11-23 08:52:05,299 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 08:52:05,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:52:05,303 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 195 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:52:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 572 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:52:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 08:52:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2023-11-23 08:52:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 08:52:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2023-11-23 08:52:05,320 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 60 [2023-11-23 08:52:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:52:05,320 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2023-11-23 08:52:05,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 08:52:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2023-11-23 08:52:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 08:52:05,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:52:05,321 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:52:05,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:05,531 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:52:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:52:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1089320432, now seen corresponding path program 5 times [2023-11-23 08:52:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 08:52:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963256913] [2023-11-23 08:52:05,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:52:05,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:05,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 08:52:05,533 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 08:52:05,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 08:52:05,993 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-23 08:52:05,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-23 08:52:05,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 08:52:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 08:52:06,441 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-23 08:52:06,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 08:52:06,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 08:52:06,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:52:06,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 08:52:06,661 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1] [2023-11-23 08:52:06,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 08:52:06,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res290 [2023-11-23 08:52:06,764 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,764 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,765 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,771 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,773 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,774 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,775 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,776 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,777 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,777 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,778 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,779 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,779 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,780 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,787 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated [2023-11-23 08:52:06,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:52:06 BoogieIcfgContainer [2023-11-23 08:52:06,806 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 08:52:06,806 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 08:52:06,812 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 08:52:06,813 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 08:52:06,813 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:51:51" (3/4) ... [2023-11-23 08:52:06,814 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 08:52:06,838 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~memset~res290 [2023-11-23 08:52:06,860 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,861 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,862 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,864 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,865 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,865 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,865 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,866 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,866 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,867 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,868 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-11-23 08:52:06,868 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated [2023-11-23 08:52:06,948 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 08:52:06,954 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 08:52:06,955 INFO L158 Benchmark]: Toolchain (without parser) took 18418.59ms. Allocated memory was 77.6MB in the beginning and 148.9MB in the end (delta: 71.3MB). Free memory was 40.5MB in the beginning and 83.9MB in the end (delta: -43.4MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,955 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 08:52:06,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2265.83ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 40.3MB in the beginning and 64.6MB in the end (delta: -24.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.31ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 59.2MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,957 INFO L158 Benchmark]: Boogie Preprocessor took 38.55ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 56.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,958 INFO L158 Benchmark]: RCFGBuilder took 556.40ms. Allocated memory is still 102.8MB. Free memory was 55.6MB in the beginning and 34.0MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,959 INFO L158 Benchmark]: TraceAbstraction took 15272.94ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 62.4MB in the beginning and 89.2MB in the end (delta: -26.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,959 INFO L158 Benchmark]: Witness Printer took 147.90ms. Allocated memory is still 148.9MB. Free memory was 89.2MB in the beginning and 83.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 08:52:06,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2265.83ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 40.3MB in the beginning and 64.6MB in the end (delta: -24.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.31ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 59.2MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.55ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 56.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 556.40ms. Allocated memory is still 102.8MB. Free memory was 55.6MB in the beginning and 34.0MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 15272.94ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 62.4MB in the beginning and 89.2MB in the end (delta: -26.8MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Witness Printer took 147.90ms. Allocated memory is still 148.9MB. Free memory was 89.2MB in the beginning and 83.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res290 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~memset~res290 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret291 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; [L7354] CALL aws_linked_list_node_reset_harness() [L7346] struct aws_linked_list_node node; VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7349] CALL aws_linked_list_node_reset(&node) VAL [node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] CALL assume_abort_if_not((node != ((void *)0) )) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4675-L4677] RET assume_abort_if_not((node != ((void *)0) )) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4678] FCALL memset(&(*node), 0, sizeof(*node)) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [\old(bufsize)=16, buf={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2335] size_t i; [L2336] const uint8_t *buf_u8 = (const uint8_t *)buf; [L2337] i = 0 VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=2, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=3, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=4, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=5, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=6, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=7, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=8, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=9, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=10, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=11, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=12, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=13, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=14, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND TRUE i < bufsize [L2338] buf_u8[i] VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=15, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2338] COND FALSE !(buf_u8[i]) [L2337] ++i VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2337] COND FALSE !(i < bufsize) VAL [\old(bufsize)=16, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L2345-L2347] return 1 ; VAL [\old(bufsize)=16, \result=1, buf={7:0}, buf={7:0}, buf_u8={7:0}, bufsize=16, i=16, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] RET, EXPR aws_is_mem_zeroed(&(*node), sizeof(*node)) VAL [node={7:0}, node={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4679] CALL __VERIFIER_assert(!((aws_is_mem_zeroed(&(*node), sizeof(*node))))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 298 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 2259 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1893 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1175 IncrementalHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 366 mSDtfsCounter, 1175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=11, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 469 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 1470 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1876 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1026/1392 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-23 08:52:07,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE