./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:49,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:49,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:15:49,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:49,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:49,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:49,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:49,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:49,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:49,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:49,862 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:49,862 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:49,863 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:49,864 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:49,864 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:49,865 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:49,865 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:49,866 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:49,866 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:49,867 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:49,868 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:49,869 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:49,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:15:49,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:15:49,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:49,871 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:49,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:49,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:49,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:49,874 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:15:49,874 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:15:49,875 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:15:49,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:49,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:15:49,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:49,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:49,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:49,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:49,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:49,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:49,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:49,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:49,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:49,881 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:49,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:49,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:49,882 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:49,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:49,883 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2023-11-23 21:15:50,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:50,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:50,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:50,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:50,223 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:50,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-23 21:15:54,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:54,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:54,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-23 21:15:54,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/data/d8af74d12/d96379901f694c408aca9098e684bc8e/FLAGe64655ef6 [2023-11-23 21:15:54,544 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/data/d8af74d12/d96379901f694c408aca9098e684bc8e [2023-11-23 21:15:54,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:54,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:54,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:54,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:54,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:54,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:54" (1/1) ... [2023-11-23 21:15:54,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28546965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:54, skipping insertion in model container [2023-11-23 21:15:54,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:54" (1/1) ... [2023-11-23 21:15:54,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:55,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:55,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:55,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:55,537 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:55,548 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:55,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55 WrapperNode [2023-11-23 21:15:55,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:55,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:55,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:55,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:55,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,675 INFO L138 Inliner]: procedures = 184, calls = 150, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 228 [2023-11-23 21:15:55,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:55,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:55,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:55,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:55,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:55,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:55,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:55,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:55,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (1/1) ... [2023-11-23 21:15:55,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:55,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:55,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:55,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:15:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:15:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2023-11-23 21:15:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2023-11-23 21:15:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2023-11-23 21:15:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2023-11-23 21:15:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2023-11-23 21:15:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2023-11-23 21:15:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2023-11-23 21:15:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2023-11-23 21:15:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2023-11-23 21:15:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2023-11-23 21:15:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2023-11-23 21:15:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2023-11-23 21:15:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2023-11-23 21:15:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2023-11-23 21:15:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2023-11-23 21:15:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2023-11-23 21:15:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-23 21:15:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:56,266 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:56,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:57,250 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:57,371 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:57,372 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:15:57,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:57 BoogieIcfgContainer [2023-11-23 21:15:57,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:57,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:57,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:57,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:57,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:54" (1/3) ... [2023-11-23 21:15:57,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e56589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:57, skipping insertion in model container [2023-11-23 21:15:57,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:55" (2/3) ... [2023-11-23 21:15:57,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e56589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:57, skipping insertion in model container [2023-11-23 21:15:57,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:57" (3/3) ... [2023-11-23 21:15:57,388 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2023-11-23 21:15:57,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:57,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 162 error locations. [2023-11-23 21:15:57,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:57,505 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@681090a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:57,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2023-11-23 21:15:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-23 21:15:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:15:57,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:57,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:15:57,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:15:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 619048511, now seen corresponding path program 1 times [2023-11-23 21:15:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845749755] [2023-11-23 21:15:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:57,908 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 21:15:57,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845749755] [2023-11-23 21:15:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845749755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:57,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199991240] [2023-11-23 21:15:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:57,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:57,956 INFO L87 Difference]: Start difference. First operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:15:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:58,471 INFO L93 Difference]: Finished difference Result 382 states and 443 transitions. [2023-11-23 21:15:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-11-23 21:15:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:58,499 INFO L225 Difference]: With dead ends: 382 [2023-11-23 21:15:58,499 INFO L226 Difference]: Without dead ends: 381 [2023-11-23 21:15:58,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:58,509 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 356 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 235 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-23 21:15:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 352. [2023-11-23 21:15:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 170 states have (on average 2.0) internal successors, (340), 308 states have internal predecessors, (340), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-23 21:15:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 409 transitions. [2023-11-23 21:15:58,609 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 409 transitions. Word has length 5 [2023-11-23 21:15:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:58,609 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 409 transitions. [2023-11-23 21:15:58,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:15:58,610 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 409 transitions. [2023-11-23 21:15:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:15:58,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:58,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:15:58,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:58,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:15:58,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash 619048512, now seen corresponding path program 1 times [2023-11-23 21:15:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:58,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697911611] [2023-11-23 21:15:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:58,887 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 21:15:58,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:58,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697911611] [2023-11-23 21:15:58,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697911611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:58,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:58,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266072215] [2023-11-23 21:15:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:58,893 INFO L87 Difference]: Start difference. First operand 352 states and 409 transitions. Second operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:15:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:59,554 INFO L93 Difference]: Finished difference Result 433 states and 517 transitions. [2023-11-23 21:15:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:59,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-11-23 21:15:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:59,563 INFO L225 Difference]: With dead ends: 433 [2023-11-23 21:15:59,563 INFO L226 Difference]: Without dead ends: 433 [2023-11-23 21:15:59,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:59,565 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 114 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:59,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 642 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:15:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-23 21:15:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 412. [2023-11-23 21:15:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 219 states have (on average 1.8721461187214612) internal successors, (410), 353 states have internal predecessors, (410), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-11-23 21:15:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 506 transitions. [2023-11-23 21:15:59,626 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 506 transitions. Word has length 5 [2023-11-23 21:15:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:59,629 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 506 transitions. [2023-11-23 21:15:59,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:15:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 506 transitions. [2023-11-23 21:15:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:15:59,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:59,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:59,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:15:59,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:15:59,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash -514918958, now seen corresponding path program 1 times [2023-11-23 21:15:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:59,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651936476] [2023-11-23 21:15:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:59,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:59,903 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 21:15:59,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651936476] [2023-11-23 21:15:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651936476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:59,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:59,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:59,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103851755] [2023-11-23 21:15:59,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:59,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:15:59,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:59,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:15:59,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:59,905 INFO L87 Difference]: Start difference. First operand 412 states and 506 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:00,417 INFO L93 Difference]: Finished difference Result 411 states and 505 transitions. [2023-11-23 21:16:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:16:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-23 21:16:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:00,422 INFO L225 Difference]: With dead ends: 411 [2023-11-23 21:16:00,422 INFO L226 Difference]: Without dead ends: 411 [2023-11-23 21:16:00,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 21:16:00,423 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 10 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:00,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 899 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:16:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-11-23 21:16:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2023-11-23 21:16:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 219 states have (on average 1.8675799086757991) internal successors, (409), 352 states have internal predecessors, (409), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-11-23 21:16:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 505 transitions. [2023-11-23 21:16:00,447 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 505 transitions. Word has length 8 [2023-11-23 21:16:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:00,447 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 505 transitions. [2023-11-23 21:16:00,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 505 transitions. [2023-11-23 21:16:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:16:00,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:00,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:16:00,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash -514918957, now seen corresponding path program 1 times [2023-11-23 21:16:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:00,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930109895] [2023-11-23 21:16:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:00,729 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 21:16:00,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930109895] [2023-11-23 21:16:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930109895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:00,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:00,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608746984] [2023-11-23 21:16:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:16:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:16:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:00,731 INFO L87 Difference]: Start difference. First operand 411 states and 505 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:01,317 INFO L93 Difference]: Finished difference Result 410 states and 504 transitions. [2023-11-23 21:16:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:16:01,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-23 21:16:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:01,325 INFO L225 Difference]: With dead ends: 410 [2023-11-23 21:16:01,325 INFO L226 Difference]: Without dead ends: 410 [2023-11-23 21:16:01,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:01,329 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 7 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:01,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 877 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-23 21:16:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-11-23 21:16:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 219 states have (on average 1.8630136986301369) internal successors, (408), 351 states have internal predecessors, (408), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-11-23 21:16:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 504 transitions. [2023-11-23 21:16:01,357 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 504 transitions. Word has length 8 [2023-11-23 21:16:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:01,357 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 504 transitions. [2023-11-23 21:16:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 504 transitions. [2023-11-23 21:16:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:16:01,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:01,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:16:01,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:01,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 437055175, now seen corresponding path program 1 times [2023-11-23 21:16:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733197786] [2023-11-23 21:16:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,439 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 21:16:01,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:01,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733197786] [2023-11-23 21:16:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733197786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:01,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:01,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830757544] [2023-11-23 21:16:01,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:01,442 INFO L87 Difference]: Start difference. First operand 410 states and 504 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:01,721 INFO L93 Difference]: Finished difference Result 409 states and 503 transitions. [2023-11-23 21:16:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:01,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-23 21:16:01,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:01,726 INFO L225 Difference]: With dead ends: 409 [2023-11-23 21:16:01,726 INFO L226 Difference]: Without dead ends: 409 [2023-11-23 21:16:01,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:01,727 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 2 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:01,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 518 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:16:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-23 21:16:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2023-11-23 21:16:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 219 states have (on average 1.8584474885844748) internal successors, (407), 350 states have internal predecessors, (407), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-11-23 21:16:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 503 transitions. [2023-11-23 21:16:01,766 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 503 transitions. Word has length 12 [2023-11-23 21:16:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:01,766 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 503 transitions. [2023-11-23 21:16:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 503 transitions. [2023-11-23 21:16:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:16:01,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:01,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:01,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:16:01,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:01,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 437055176, now seen corresponding path program 1 times [2023-11-23 21:16:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76300680] [2023-11-23 21:16:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,879 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 21:16:01,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76300680] [2023-11-23 21:16:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76300680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973159113] [2023-11-23 21:16:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:01,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:01,882 INFO L87 Difference]: Start difference. First operand 409 states and 503 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:02,215 INFO L93 Difference]: Finished difference Result 408 states and 502 transitions. [2023-11-23 21:16:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-23 21:16:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:02,219 INFO L225 Difference]: With dead ends: 408 [2023-11-23 21:16:02,219 INFO L226 Difference]: Without dead ends: 408 [2023-11-23 21:16:02,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:02,220 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:02,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 504 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:16:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-23 21:16:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2023-11-23 21:16:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 219 states have (on average 1.8538812785388128) internal successors, (406), 349 states have internal predecessors, (406), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (54), 40 states have call predecessors, (54), 42 states have call successors, (54) [2023-11-23 21:16:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 502 transitions. [2023-11-23 21:16:02,238 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 502 transitions. Word has length 12 [2023-11-23 21:16:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 502 transitions. [2023-11-23 21:16:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 502 transitions. [2023-11-23 21:16:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:16:02,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:02,240 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] [2023-11-23 21:16:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:16:02,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:02,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -677456570, now seen corresponding path program 1 times [2023-11-23 21:16:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680644254] [2023-11-23 21:16:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:02,411 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 21:16:02,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680644254] [2023-11-23 21:16:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680644254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:02,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:02,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773661488] [2023-11-23 21:16:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:02,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:02,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:02,414 INFO L87 Difference]: Start difference. First operand 408 states and 502 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:03,094 INFO L93 Difference]: Finished difference Result 438 states and 547 transitions. [2023-11-23 21:16:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-23 21:16:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:03,098 INFO L225 Difference]: With dead ends: 438 [2023-11-23 21:16:03,098 INFO L226 Difference]: Without dead ends: 438 [2023-11-23 21:16:03,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:03,100 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 44 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:03,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1244 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:03,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-23 21:16:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 427. [2023-11-23 21:16:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 234 states have (on average 1.829059829059829) internal successors, (428), 365 states have internal predecessors, (428), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (58), 41 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-23 21:16:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 529 transitions. [2023-11-23 21:16:03,118 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 529 transitions. Word has length 20 [2023-11-23 21:16:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:03,118 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 529 transitions. [2023-11-23 21:16:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 529 transitions. [2023-11-23 21:16:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:16:03,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:03,120 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] [2023-11-23 21:16:03,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:16:03,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:03,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -677456569, now seen corresponding path program 1 times [2023-11-23 21:16:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:03,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026738305] [2023-11-23 21:16:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:03,489 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 21:16:03,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:03,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026738305] [2023-11-23 21:16:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026738305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:03,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558161074] [2023-11-23 21:16:03,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:03,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:03,492 INFO L87 Difference]: Start difference. First operand 427 states and 529 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:04,265 INFO L93 Difference]: Finished difference Result 437 states and 546 transitions. [2023-11-23 21:16:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:16:04,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-23 21:16:04,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:04,271 INFO L225 Difference]: With dead ends: 437 [2023-11-23 21:16:04,271 INFO L226 Difference]: Without dead ends: 437 [2023-11-23 21:16:04,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:04,272 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 38 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:04,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1184 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-23 21:16:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 427. [2023-11-23 21:16:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 234 states have (on average 1.8247863247863247) internal successors, (427), 365 states have internal predecessors, (427), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (58), 41 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-23 21:16:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 528 transitions. [2023-11-23 21:16:04,290 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 528 transitions. Word has length 20 [2023-11-23 21:16:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 528 transitions. [2023-11-23 21:16:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 528 transitions. [2023-11-23 21:16:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:16:04,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:04,292 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] [2023-11-23 21:16:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:16:04,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:04,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash 462384011, now seen corresponding path program 1 times [2023-11-23 21:16:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:04,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473950534] [2023-11-23 21:16:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:04,495 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 21:16:04,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473950534] [2023-11-23 21:16:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473950534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:04,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988755934] [2023-11-23 21:16:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:04,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:04,498 INFO L87 Difference]: Start difference. First operand 427 states and 528 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:05,214 INFO L93 Difference]: Finished difference Result 523 states and 664 transitions. [2023-11-23 21:16:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:05,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-23 21:16:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:05,219 INFO L225 Difference]: With dead ends: 523 [2023-11-23 21:16:05,219 INFO L226 Difference]: Without dead ends: 523 [2023-11-23 21:16:05,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:05,220 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 160 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:05,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1186 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-23 21:16:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 459. [2023-11-23 21:16:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 257 states have (on average 1.8054474708171206) internal successors, (464), 391 states have internal predecessors, (464), 49 states have call successors, (49), 24 states have call predecessors, (49), 24 states have return successors, (70), 43 states have call predecessors, (70), 49 states have call successors, (70) [2023-11-23 21:16:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 583 transitions. [2023-11-23 21:16:05,242 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 583 transitions. Word has length 21 [2023-11-23 21:16:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:05,242 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 583 transitions. [2023-11-23 21:16:05,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 583 transitions. [2023-11-23 21:16:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:16:05,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:05,244 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] [2023-11-23 21:16:05,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:16:05,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 462384012, now seen corresponding path program 1 times [2023-11-23 21:16:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300972586] [2023-11-23 21:16:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:05,569 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 21:16:05,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300972586] [2023-11-23 21:16:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300972586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:05,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:05,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:16:05,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386547101] [2023-11-23 21:16:05,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:16:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:16:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:05,571 INFO L87 Difference]: Start difference. First operand 459 states and 583 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:06,339 INFO L93 Difference]: Finished difference Result 442 states and 529 transitions. [2023-11-23 21:16:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:16:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-23 21:16:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:06,343 INFO L225 Difference]: With dead ends: 442 [2023-11-23 21:16:06,343 INFO L226 Difference]: Without dead ends: 442 [2023-11-23 21:16:06,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:16:06,344 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 426 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:06,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 715 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-23 21:16:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 392. [2023-11-23 21:16:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 206 states have (on average 1.8446601941747574) internal successors, (380), 339 states have internal predecessors, (380), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (51), 34 states have call predecessors, (51), 39 states have call successors, (51) [2023-11-23 21:16:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2023-11-23 21:16:06,363 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 21 [2023-11-23 21:16:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:06,365 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2023-11-23 21:16:06,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:16:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2023-11-23 21:16:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:16:06,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:06,368 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, 1, 1, 1] [2023-11-23 21:16:06,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:16:06,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:06,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -859393083, now seen corresponding path program 1 times [2023-11-23 21:16:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47497435] [2023-11-23 21:16:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:06,498 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 21:16:06,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47497435] [2023-11-23 21:16:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47497435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:06,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:06,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:06,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824419075] [2023-11-23 21:16:06,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:06,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:06,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:06,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:06,501 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:06,671 INFO L93 Difference]: Finished difference Result 403 states and 481 transitions. [2023-11-23 21:16:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:16:06,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-23 21:16:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:06,675 INFO L225 Difference]: With dead ends: 403 [2023-11-23 21:16:06,675 INFO L226 Difference]: Without dead ends: 401 [2023-11-23 21:16:06,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:16:06,676 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 20 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:06,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 907 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:16:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-23 21:16:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2023-11-23 21:16:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 212 states have (on average 1.8349056603773586) internal successors, (389), 345 states have internal predecessors, (389), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (51), 34 states have call predecessors, (51), 39 states have call successors, (51) [2023-11-23 21:16:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 479 transitions. [2023-11-23 21:16:06,691 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 479 transitions. Word has length 30 [2023-11-23 21:16:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 479 transitions. [2023-11-23 21:16:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 479 transitions. [2023-11-23 21:16:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:16:06,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:06,697 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, 1, 1] [2023-11-23 21:16:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:16:06,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:06,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash -433897454, now seen corresponding path program 1 times [2023-11-23 21:16:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964917767] [2023-11-23 21:16:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:07,024 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 21:16:07,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964917767] [2023-11-23 21:16:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964917767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:16:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737332625] [2023-11-23 21:16:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:07,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:16:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:16:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:07,027 INFO L87 Difference]: Start difference. First operand 399 states and 479 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:16:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:07,905 INFO L93 Difference]: Finished difference Result 442 states and 562 transitions. [2023-11-23 21:16:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:16:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-11-23 21:16:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:07,909 INFO L225 Difference]: With dead ends: 442 [2023-11-23 21:16:07,909 INFO L226 Difference]: Without dead ends: 436 [2023-11-23 21:16:07,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:16:07,910 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 133 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:07,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1907 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:16:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-23 21:16:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 399. [2023-11-23 21:16:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 212 states have (on average 1.830188679245283) internal successors, (388), 345 states have internal predecessors, (388), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (51), 34 states have call predecessors, (51), 39 states have call successors, (51) [2023-11-23 21:16:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 478 transitions. [2023-11-23 21:16:07,930 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 478 transitions. Word has length 29 [2023-11-23 21:16:07,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:07,931 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 478 transitions. [2023-11-23 21:16:07,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:16:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 478 transitions. [2023-11-23 21:16:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:16:07,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:07,934 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, 1, 1, 1, 1, 1] [2023-11-23 21:16:07,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:16:07,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:07,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash -161418333, now seen corresponding path program 1 times [2023-11-23 21:16:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:07,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868476501] [2023-11-23 21:16:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:08,215 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 21:16:08,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868476501] [2023-11-23 21:16:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868476501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:08,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:16:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274321886] [2023-11-23 21:16:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:16:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:16:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:08,219 INFO L87 Difference]: Start difference. First operand 399 states and 478 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:09,413 INFO L93 Difference]: Finished difference Result 600 states and 818 transitions. [2023-11-23 21:16:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:16:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-11-23 21:16:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:09,420 INFO L225 Difference]: With dead ends: 600 [2023-11-23 21:16:09,420 INFO L226 Difference]: Without dead ends: 594 [2023-11-23 21:16:09,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:16:09,422 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 298 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:09,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1427 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:16:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-11-23 21:16:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 552. [2023-11-23 21:16:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 327 states have (on average 1.672782874617737) internal successors, (547), 453 states have internal predecessors, (547), 55 states have call successors, (55), 29 states have call predecessors, (55), 41 states have return successors, (178), 69 states have call predecessors, (178), 55 states have call successors, (178) [2023-11-23 21:16:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 780 transitions. [2023-11-23 21:16:09,462 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 780 transitions. Word has length 32 [2023-11-23 21:16:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:09,463 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 780 transitions. [2023-11-23 21:16:09,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 780 transitions. [2023-11-23 21:16:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:16:09,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:09,465 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:16:09,465 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1122070044, now seen corresponding path program 1 times [2023-11-23 21:16:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:09,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005583852] [2023-11-23 21:16:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:09,913 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 21:16:09,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005583852] [2023-11-23 21:16:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005583852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:09,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:09,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:16:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753456015] [2023-11-23 21:16:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:09,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:16:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:16:09,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:09,918 INFO L87 Difference]: Start difference. First operand 552 states and 780 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:10,695 INFO L93 Difference]: Finished difference Result 581 states and 842 transitions. [2023-11-23 21:16:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:16:10,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-23 21:16:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:10,704 INFO L225 Difference]: With dead ends: 581 [2023-11-23 21:16:10,704 INFO L226 Difference]: Without dead ends: 581 [2023-11-23 21:16:10,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:10,705 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 646 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:10,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 294 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-11-23 21:16:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 556. [2023-11-23 21:16:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 345 states have (on average 1.5478260869565217) internal successors, (534), 446 states have internal predecessors, (534), 55 states have call successors, (55), 29 states have call predecessors, (55), 46 states have return successors, (207), 80 states have call predecessors, (207), 55 states have call successors, (207) [2023-11-23 21:16:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 796 transitions. [2023-11-23 21:16:10,739 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 796 transitions. Word has length 33 [2023-11-23 21:16:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:10,740 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 796 transitions. [2023-11-23 21:16:10,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 796 transitions. [2023-11-23 21:16:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:16:10,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:10,741 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:10,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:16:10,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 424433088, now seen corresponding path program 1 times [2023-11-23 21:16:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161958255] [2023-11-23 21:16:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:11,762 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 21:16:11,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:11,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161958255] [2023-11-23 21:16:11,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161958255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:11,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:11,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:16:11,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762246708] [2023-11-23 21:16:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:11,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:16:11,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:11,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:16:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:16:11,766 INFO L87 Difference]: Start difference. First operand 556 states and 796 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:13,159 INFO L93 Difference]: Finished difference Result 608 states and 899 transitions. [2023-11-23 21:16:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:16:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-23 21:16:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:13,165 INFO L225 Difference]: With dead ends: 608 [2023-11-23 21:16:13,165 INFO L226 Difference]: Without dead ends: 608 [2023-11-23 21:16:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:16:13,168 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 338 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:13,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1502 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:16:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-23 21:16:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 561. [2023-11-23 21:16:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 349 states have (on average 1.5444126074498568) internal successors, (539), 449 states have internal predecessors, (539), 56 states have call successors, (56), 30 states have call predecessors, (56), 46 states have return successors, (209), 81 states have call predecessors, (209), 56 states have call successors, (209) [2023-11-23 21:16:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 804 transitions. [2023-11-23 21:16:13,202 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 804 transitions. Word has length 34 [2023-11-23 21:16:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:13,202 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 804 transitions. [2023-11-23 21:16:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 804 transitions. [2023-11-23 21:16:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:16:13,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:13,204 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:13,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:16:13,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:13,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash 424433089, now seen corresponding path program 1 times [2023-11-23 21:16:13,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:13,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201618684] [2023-11-23 21:16:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:14,717 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 21:16:14,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201618684] [2023-11-23 21:16:14,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201618684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:14,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:14,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 21:16:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171833292] [2023-11-23 21:16:14,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:16:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:16:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:16:14,722 INFO L87 Difference]: Start difference. First operand 561 states and 804 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:16,432 INFO L93 Difference]: Finished difference Result 607 states and 898 transitions. [2023-11-23 21:16:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:16:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-23 21:16:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:16,438 INFO L225 Difference]: With dead ends: 607 [2023-11-23 21:16:16,438 INFO L226 Difference]: Without dead ends: 607 [2023-11-23 21:16:16,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:16:16,439 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 352 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:16,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1137 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:16:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-23 21:16:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 561. [2023-11-23 21:16:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 349 states have (on average 1.5415472779369628) internal successors, (538), 449 states have internal predecessors, (538), 56 states have call successors, (56), 30 states have call predecessors, (56), 46 states have return successors, (209), 81 states have call predecessors, (209), 56 states have call successors, (209) [2023-11-23 21:16:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 803 transitions. [2023-11-23 21:16:16,494 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 803 transitions. Word has length 34 [2023-11-23 21:16:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:16,495 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 803 transitions. [2023-11-23 21:16:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 13 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:16:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 803 transitions. [2023-11-23 21:16:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:16:16,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:16,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:16,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:16:16,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:16,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -141691295, now seen corresponding path program 1 times [2023-11-23 21:16:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912576673] [2023-11-23 21:16:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:16,588 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 21:16:16,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912576673] [2023-11-23 21:16:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912576673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:16,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:16,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457765528] [2023-11-23 21:16:16,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:16,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:16,592 INFO L87 Difference]: Start difference. First operand 561 states and 803 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:16,844 INFO L93 Difference]: Finished difference Result 559 states and 801 transitions. [2023-11-23 21:16:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:16,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-23 21:16:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:16,850 INFO L225 Difference]: With dead ends: 559 [2023-11-23 21:16:16,850 INFO L226 Difference]: Without dead ends: 559 [2023-11-23 21:16:16,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:16,851 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 7 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:16,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 467 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-23 21:16:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-23 21:16:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 349 states have (on average 1.5358166189111748) internal successors, (536), 447 states have internal predecessors, (536), 56 states have call successors, (56), 30 states have call predecessors, (56), 46 states have return successors, (209), 81 states have call predecessors, (209), 56 states have call successors, (209) [2023-11-23 21:16:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 801 transitions. [2023-11-23 21:16:16,909 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 801 transitions. Word has length 36 [2023-11-23 21:16:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:16,911 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 801 transitions. [2023-11-23 21:16:16,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:16,911 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 801 transitions. [2023-11-23 21:16:16,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:16:16,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:16,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:16,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:16:16,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:16,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -141691294, now seen corresponding path program 1 times [2023-11-23 21:16:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173554047] [2023-11-23 21:16:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:16,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:17,049 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 21:16:17,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173554047] [2023-11-23 21:16:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173554047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405440839] [2023-11-23 21:16:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:17,052 INFO L87 Difference]: Start difference. First operand 559 states and 801 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:17,312 INFO L93 Difference]: Finished difference Result 557 states and 799 transitions. [2023-11-23 21:16:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-23 21:16:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:17,317 INFO L225 Difference]: With dead ends: 557 [2023-11-23 21:16:17,318 INFO L226 Difference]: Without dead ends: 557 [2023-11-23 21:16:17,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:17,321 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 5 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 473 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:17,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-23 21:16:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2023-11-23 21:16:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 349 states have (on average 1.5300859598853869) internal successors, (534), 445 states have internal predecessors, (534), 56 states have call successors, (56), 30 states have call predecessors, (56), 46 states have return successors, (209), 81 states have call predecessors, (209), 56 states have call successors, (209) [2023-11-23 21:16:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 799 transitions. [2023-11-23 21:16:17,363 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 799 transitions. Word has length 36 [2023-11-23 21:16:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:17,363 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 799 transitions. [2023-11-23 21:16:17,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 799 transitions. [2023-11-23 21:16:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:16:17,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:17,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:17,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:16:17,365 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:17,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:17,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1204943104, now seen corresponding path program 1 times [2023-11-23 21:16:17,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:17,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035768035] [2023-11-23 21:16:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:17,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:17,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:17,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035768035] [2023-11-23 21:16:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035768035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:17,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715045738] [2023-11-23 21:16:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:17,583 INFO L87 Difference]: Start difference. First operand 557 states and 799 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:18,198 INFO L93 Difference]: Finished difference Result 585 states and 852 transitions. [2023-11-23 21:16:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-11-23 21:16:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:18,202 INFO L225 Difference]: With dead ends: 585 [2023-11-23 21:16:18,203 INFO L226 Difference]: Without dead ends: 585 [2023-11-23 21:16:18,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:18,204 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 45 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:18,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1149 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-23 21:16:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 577. [2023-11-23 21:16:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 365 states have (on average 1.526027397260274) internal successors, (557), 462 states have internal predecessors, (557), 57 states have call successors, (57), 32 states have call predecessors, (57), 49 states have return successors, (214), 82 states have call predecessors, (214), 57 states have call successors, (214) [2023-11-23 21:16:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 828 transitions. [2023-11-23 21:16:18,240 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 828 transitions. Word has length 44 [2023-11-23 21:16:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:18,240 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 828 transitions. [2023-11-23 21:16:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 828 transitions. [2023-11-23 21:16:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:16:18,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:18,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:18,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:16:18,242 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:18,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1204943103, now seen corresponding path program 1 times [2023-11-23 21:16:18,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:18,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130428960] [2023-11-23 21:16:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:18,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:18,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130428960] [2023-11-23 21:16:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130428960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739557825] [2023-11-23 21:16:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:18,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:18,607 INFO L87 Difference]: Start difference. First operand 577 states and 828 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:19,269 INFO L93 Difference]: Finished difference Result 584 states and 851 transitions. [2023-11-23 21:16:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:16:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-11-23 21:16:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:19,275 INFO L225 Difference]: With dead ends: 584 [2023-11-23 21:16:19,275 INFO L226 Difference]: Without dead ends: 584 [2023-11-23 21:16:19,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:19,276 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 42 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:19,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1201 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-23 21:16:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 577. [2023-11-23 21:16:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 365 states have (on average 1.5232876712328767) internal successors, (556), 462 states have internal predecessors, (556), 57 states have call successors, (57), 32 states have call predecessors, (57), 49 states have return successors, (214), 82 states have call predecessors, (214), 57 states have call successors, (214) [2023-11-23 21:16:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 827 transitions. [2023-11-23 21:16:19,310 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 827 transitions. Word has length 44 [2023-11-23 21:16:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:19,310 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 827 transitions. [2023-11-23 21:16:19,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 827 transitions. [2023-11-23 21:16:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 21:16:19,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:19,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:16:19,314 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:19,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1290170641, now seen corresponding path program 1 times [2023-11-23 21:16:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077671773] [2023-11-23 21:16:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:19,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077671773] [2023-11-23 21:16:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077671773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679914619] [2023-11-23 21:16:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:19,522 INFO L87 Difference]: Start difference. First operand 577 states and 827 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:20,245 INFO L93 Difference]: Finished difference Result 651 states and 945 transitions. [2023-11-23 21:16:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-11-23 21:16:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:20,252 INFO L225 Difference]: With dead ends: 651 [2023-11-23 21:16:20,252 INFO L226 Difference]: Without dead ends: 651 [2023-11-23 21:16:20,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:20,253 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 162 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:20,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1066 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-23 21:16:20,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 585. [2023-11-23 21:16:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 371 states have (on average 1.522911051212938) internal successors, (565), 468 states have internal predecessors, (565), 58 states have call successors, (58), 33 states have call predecessors, (58), 50 states have return successors, (218), 83 states have call predecessors, (218), 58 states have call successors, (218) [2023-11-23 21:16:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 841 transitions. [2023-11-23 21:16:20,294 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 841 transitions. Word has length 45 [2023-11-23 21:16:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:20,295 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 841 transitions. [2023-11-23 21:16:20,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 841 transitions. [2023-11-23 21:16:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 21:16:20,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:20,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:20,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 21:16:20,297 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:20,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1290170642, now seen corresponding path program 1 times [2023-11-23 21:16:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:20,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280155708] [2023-11-23 21:16:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:20,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:20,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280155708] [2023-11-23 21:16:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280155708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:20,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:20,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:20,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384793913] [2023-11-23 21:16:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:20,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:20,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:20,671 INFO L87 Difference]: Start difference. First operand 585 states and 841 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:21,347 INFO L93 Difference]: Finished difference Result 591 states and 856 transitions. [2023-11-23 21:16:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:16:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-11-23 21:16:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:21,354 INFO L225 Difference]: With dead ends: 591 [2023-11-23 21:16:21,355 INFO L226 Difference]: Without dead ends: 591 [2023-11-23 21:16:21,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:21,358 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 39 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:21,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1180 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2023-11-23 21:16:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 585. [2023-11-23 21:16:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 371 states have (on average 1.5202156334231807) internal successors, (564), 468 states have internal predecessors, (564), 58 states have call successors, (58), 33 states have call predecessors, (58), 50 states have return successors, (218), 83 states have call predecessors, (218), 58 states have call successors, (218) [2023-11-23 21:16:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 840 transitions. [2023-11-23 21:16:21,393 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 840 transitions. Word has length 45 [2023-11-23 21:16:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:21,393 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 840 transitions. [2023-11-23 21:16:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 840 transitions. [2023-11-23 21:16:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:16:21,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:21,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 21:16:21,395 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1329796158, now seen corresponding path program 1 times [2023-11-23 21:16:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519589427] [2023-11-23 21:16:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:21,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:21,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519589427] [2023-11-23 21:16:21,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519589427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:21,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771774455] [2023-11-23 21:16:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:21,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:21,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:21,766 INFO L87 Difference]: Start difference. First operand 585 states and 840 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:22,514 INFO L93 Difference]: Finished difference Result 629 states and 926 transitions. [2023-11-23 21:16:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:22,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-11-23 21:16:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:22,523 INFO L225 Difference]: With dead ends: 629 [2023-11-23 21:16:22,523 INFO L226 Difference]: Without dead ends: 629 [2023-11-23 21:16:22,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:22,524 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 54 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:22,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1160 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:16:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-11-23 21:16:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 618. [2023-11-23 21:16:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 395 states have (on average 1.5113924050632912) internal successors, (597), 494 states have internal predecessors, (597), 62 states have call successors, (62), 35 states have call predecessors, (62), 55 states have return successors, (246), 88 states have call predecessors, (246), 62 states have call successors, (246) [2023-11-23 21:16:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 905 transitions. [2023-11-23 21:16:22,557 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 905 transitions. Word has length 46 [2023-11-23 21:16:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:22,557 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 905 transitions. [2023-11-23 21:16:22,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 905 transitions. [2023-11-23 21:16:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:16:22,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:22,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:22,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:16:22,559 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:22,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1329796157, now seen corresponding path program 1 times [2023-11-23 21:16:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261983178] [2023-11-23 21:16:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:22,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:22,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261983178] [2023-11-23 21:16:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261983178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:22,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:22,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233977480] [2023-11-23 21:16:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:22,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:22,759 INFO L87 Difference]: Start difference. First operand 618 states and 905 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:23,411 INFO L93 Difference]: Finished difference Result 708 states and 1076 transitions. [2023-11-23 21:16:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-11-23 21:16:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:23,418 INFO L225 Difference]: With dead ends: 708 [2023-11-23 21:16:23,418 INFO L226 Difference]: Without dead ends: 708 [2023-11-23 21:16:23,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:23,419 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 113 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:23,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1095 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-11-23 21:16:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 669. [2023-11-23 21:16:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 435 states have (on average 1.5011494252873563) internal successors, (653), 537 states have internal predecessors, (653), 64 states have call successors, (64), 38 states have call predecessors, (64), 64 states have return successors, (271), 93 states have call predecessors, (271), 64 states have call successors, (271) [2023-11-23 21:16:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 988 transitions. [2023-11-23 21:16:23,454 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 988 transitions. Word has length 46 [2023-11-23 21:16:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:23,454 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 988 transitions. [2023-11-23 21:16:23,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 988 transitions. [2023-11-23 21:16:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:16:23,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:23,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:16:23,456 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:23,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1736999090, now seen corresponding path program 1 times [2023-11-23 21:16:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43050671] [2023-11-23 21:16:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:23,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:23,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43050671] [2023-11-23 21:16:23,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43050671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:23,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:23,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522117600] [2023-11-23 21:16:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:23,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:23,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:23,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:23,637 INFO L87 Difference]: Start difference. First operand 669 states and 988 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:24,213 INFO L93 Difference]: Finished difference Result 730 states and 1117 transitions. [2023-11-23 21:16:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-23 21:16:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:24,220 INFO L225 Difference]: With dead ends: 730 [2023-11-23 21:16:24,220 INFO L226 Difference]: Without dead ends: 730 [2023-11-23 21:16:24,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:24,221 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 85 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:24,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1099 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-11-23 21:16:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 705. [2023-11-23 21:16:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 464 states have (on average 1.4978448275862069) internal successors, (695), 569 states have internal predecessors, (695), 65 states have call successors, (65), 40 states have call predecessors, (65), 70 states have return successors, (286), 95 states have call predecessors, (286), 65 states have call successors, (286) [2023-11-23 21:16:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1046 transitions. [2023-11-23 21:16:24,256 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1046 transitions. Word has length 47 [2023-11-23 21:16:24,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:24,257 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 1046 transitions. [2023-11-23 21:16:24,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1046 transitions. [2023-11-23 21:16:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:16:24,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:24,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:24,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 21:16:24,259 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:24,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:24,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1736999089, now seen corresponding path program 1 times [2023-11-23 21:16:24,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:24,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421997958] [2023-11-23 21:16:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:24,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:24,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421997958] [2023-11-23 21:16:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421997958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:24,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:24,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101169013] [2023-11-23 21:16:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:16:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:16:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:24,570 INFO L87 Difference]: Start difference. First operand 705 states and 1046 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:25,227 INFO L93 Difference]: Finished difference Result 763 states and 1162 transitions. [2023-11-23 21:16:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:16:25,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-23 21:16:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:25,235 INFO L225 Difference]: With dead ends: 763 [2023-11-23 21:16:25,235 INFO L226 Difference]: Without dead ends: 763 [2023-11-23 21:16:25,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:25,236 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 65 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:25,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1174 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:16:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-11-23 21:16:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 747. [2023-11-23 21:16:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 496 states have (on average 1.4899193548387097) internal successors, (739), 603 states have internal predecessors, (739), 69 states have call successors, (69), 42 states have call predecessors, (69), 76 states have return successors, (313), 101 states have call predecessors, (313), 69 states have call successors, (313) [2023-11-23 21:16:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1121 transitions. [2023-11-23 21:16:25,272 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1121 transitions. Word has length 47 [2023-11-23 21:16:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:25,273 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1121 transitions. [2023-11-23 21:16:25,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1121 transitions. [2023-11-23 21:16:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:16:25,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:25,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:25,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 21:16:25,275 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:25,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 521165071, now seen corresponding path program 1 times [2023-11-23 21:16:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:25,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486977313] [2023-11-23 21:16:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:16:25,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486977313] [2023-11-23 21:16:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486977313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:25,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558895691] [2023-11-23 21:16:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:25,430 INFO L87 Difference]: Start difference. First operand 747 states and 1121 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:25,746 INFO L93 Difference]: Finished difference Result 745 states and 1119 transitions. [2023-11-23 21:16:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-11-23 21:16:25,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:25,753 INFO L225 Difference]: With dead ends: 745 [2023-11-23 21:16:25,753 INFO L226 Difference]: Without dead ends: 745 [2023-11-23 21:16:25,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:16:25,754 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:25,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 623 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:16:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-11-23 21:16:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2023-11-23 21:16:25,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 496 states have (on average 1.4858870967741935) internal successors, (737), 601 states have internal predecessors, (737), 69 states have call successors, (69), 42 states have call predecessors, (69), 76 states have return successors, (313), 101 states have call predecessors, (313), 69 states have call successors, (313) [2023-11-23 21:16:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1119 transitions. [2023-11-23 21:16:25,789 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1119 transitions. Word has length 51 [2023-11-23 21:16:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:25,789 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1119 transitions. [2023-11-23 21:16:25,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1119 transitions. [2023-11-23 21:16:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:16:25,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:25,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 21:16:25,791 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:25,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 521165072, now seen corresponding path program 1 times [2023-11-23 21:16:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:25,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96877071] [2023-11-23 21:16:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:16:27,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96877071] [2023-11-23 21:16:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96877071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250600781] [2023-11-23 21:16:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:27,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:27,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-23 21:16:27,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:27,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:16:27,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:16:27,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-23 21:16:27,812 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 21:16:27,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2023-11-23 21:16:27,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-23 21:16:27,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2023-11-23 21:16:27,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-11-23 21:16:27,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:27,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 21:16:27,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-11-23 21:16:27,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:27,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 21:16:27,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-11-23 21:16:28,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:28,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 21:16:28,027 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 21:16:28,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 21:16:28,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2023-11-23 21:16:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:16:28,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:28,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:28,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 21:16:28,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2023-11-23 21:16:28,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-11-23 21:16:28,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:16:28,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 21:16:28,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-23 21:16:28,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-23 21:16:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:28,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250600781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:28,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:16:28,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 28 [2023-11-23 21:16:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591833134] [2023-11-23 21:16:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:28,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 21:16:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 21:16:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-11-23 21:16:28,673 INFO L87 Difference]: Start difference. First operand 745 states and 1119 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:16:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:30,703 INFO L93 Difference]: Finished difference Result 779 states and 1216 transitions. [2023-11-23 21:16:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:16:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2023-11-23 21:16:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:30,710 INFO L225 Difference]: With dead ends: 779 [2023-11-23 21:16:30,711 INFO L226 Difference]: Without dead ends: 779 [2023-11-23 21:16:30,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 21:16:30,712 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 508 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:30,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1782 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:16:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-11-23 21:16:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 746. [2023-11-23 21:16:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 497 states have (on average 1.4849094567404426) internal successors, (738), 602 states have internal predecessors, (738), 69 states have call successors, (69), 42 states have call predecessors, (69), 76 states have return successors, (313), 101 states have call predecessors, (313), 69 states have call successors, (313) [2023-11-23 21:16:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1120 transitions. [2023-11-23 21:16:30,751 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1120 transitions. Word has length 51 [2023-11-23 21:16:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1120 transitions. [2023-11-23 21:16:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 13 states have internal predecessors, (40), 5 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:16:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1120 transitions. [2023-11-23 21:16:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:16:30,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:30,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:30,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:16:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 21:16:30,970 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:30,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 602254768, now seen corresponding path program 1 times [2023-11-23 21:16:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980839994] [2023-11-23 21:16:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:16:31,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:31,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980839994] [2023-11-23 21:16:31,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980839994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:31,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:16:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113768563] [2023-11-23 21:16:31,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:31,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:16:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:16:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:31,345 INFO L87 Difference]: Start difference. First operand 746 states and 1120 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:31,869 INFO L93 Difference]: Finished difference Result 804 states and 1248 transitions. [2023-11-23 21:16:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:16:31,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-11-23 21:16:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:31,880 INFO L225 Difference]: With dead ends: 804 [2023-11-23 21:16:31,880 INFO L226 Difference]: Without dead ends: 804 [2023-11-23 21:16:31,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:16:31,881 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 43 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:31,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1794 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-23 21:16:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 785. [2023-11-23 21:16:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 529 states have (on average 1.4820415879017013) internal successors, (784), 634 states have internal predecessors, (784), 72 states have call successors, (72), 47 states have call predecessors, (72), 80 states have return successors, (332), 103 states have call predecessors, (332), 72 states have call successors, (332) [2023-11-23 21:16:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1188 transitions. [2023-11-23 21:16:31,919 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1188 transitions. Word has length 51 [2023-11-23 21:16:31,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:31,919 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1188 transitions. [2023-11-23 21:16:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1188 transitions. [2023-11-23 21:16:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:16:31,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:31,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:31,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 21:16:31,939 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:31,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash -172543855, now seen corresponding path program 1 times [2023-11-23 21:16:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546049596] [2023-11-23 21:16:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:32,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:32,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546049596] [2023-11-23 21:16:32,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546049596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:32,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:32,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:16:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912645405] [2023-11-23 21:16:32,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:32,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:16:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:16:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:16:32,330 INFO L87 Difference]: Start difference. First operand 785 states and 1188 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:32,947 INFO L93 Difference]: Finished difference Result 829 states and 1263 transitions. [2023-11-23 21:16:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:16:32,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-11-23 21:16:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:32,955 INFO L225 Difference]: With dead ends: 829 [2023-11-23 21:16:32,955 INFO L226 Difference]: Without dead ends: 829 [2023-11-23 21:16:32,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:16:32,956 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 46 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:32,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2083 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-23 21:16:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 814. [2023-11-23 21:16:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 548 states have (on average 1.467153284671533) internal successors, (804), 654 states have internal predecessors, (804), 76 states have call successors, (76), 48 states have call predecessors, (76), 86 states have return successors, (356), 111 states have call predecessors, (356), 76 states have call successors, (356) [2023-11-23 21:16:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1236 transitions. [2023-11-23 21:16:32,994 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1236 transitions. Word has length 50 [2023-11-23 21:16:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:32,994 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1236 transitions. [2023-11-23 21:16:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1236 transitions. [2023-11-23 21:16:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:16:32,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:32,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-23 21:16:32,996 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1851305019, now seen corresponding path program 1 times [2023-11-23 21:16:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260020188] [2023-11-23 21:16:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:16:33,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260020188] [2023-11-23 21:16:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260020188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88372598] [2023-11-23 21:16:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:33,120 INFO L87 Difference]: Start difference. First operand 814 states and 1236 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:33,593 INFO L93 Difference]: Finished difference Result 841 states and 1296 transitions. [2023-11-23 21:16:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-11-23 21:16:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:33,602 INFO L225 Difference]: With dead ends: 841 [2023-11-23 21:16:33,602 INFO L226 Difference]: Without dead ends: 841 [2023-11-23 21:16:33,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:16:33,603 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 313 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:33,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 358 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:16:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-23 21:16:33,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 813. [2023-11-23 21:16:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 548 states have (on average 1.4598540145985401) internal successors, (800), 653 states have internal predecessors, (800), 76 states have call successors, (76), 48 states have call predecessors, (76), 86 states have return successors, (356), 111 states have call predecessors, (356), 76 states have call successors, (356) [2023-11-23 21:16:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1232 transitions. [2023-11-23 21:16:33,650 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1232 transitions. Word has length 50 [2023-11-23 21:16:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:33,650 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1232 transitions. [2023-11-23 21:16:33,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:16:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1232 transitions. [2023-11-23 21:16:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:16:33,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:33,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-23 21:16:33,652 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ASStartErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:33,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -362051169, now seen corresponding path program 1 times [2023-11-23 21:16:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:33,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042994099] [2023-11-23 21:16:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:16:33,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:33,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042994099] [2023-11-23 21:16:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042994099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933314547] [2023-11-23 21:16:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:33,795 INFO L87 Difference]: Start difference. First operand 813 states and 1232 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:34,104 INFO L93 Difference]: Finished difference Result 811 states and 1230 transitions. [2023-11-23 21:16:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2023-11-23 21:16:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:34,115 INFO L225 Difference]: With dead ends: 811 [2023-11-23 21:16:34,115 INFO L226 Difference]: Without dead ends: 811 [2023-11-23 21:16:34,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:16:34,117 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:34,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 620 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:16:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-23 21:16:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2023-11-23 21:16:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 548 states have (on average 1.4562043795620438) internal successors, (798), 651 states have internal predecessors, (798), 76 states have call successors, (76), 48 states have call predecessors, (76), 86 states have return successors, (356), 111 states have call predecessors, (356), 76 states have call successors, (356) [2023-11-23 21:16:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1230 transitions. [2023-11-23 21:16:34,174 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1230 transitions. Word has length 52 [2023-11-23 21:16:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:34,175 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1230 transitions. [2023-11-23 21:16:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1230 transitions. [2023-11-23 21:16:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:16:34,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:34,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-23 21:16:34,177 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ASStartErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-23 21:16:34,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash -362051168, now seen corresponding path program 1 times [2023-11-23 21:16:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098690458] [2023-11-23 21:16:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:34,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:34,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:16:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:16:34,313 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:16:34,314 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:16:34,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ASStartErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (161 of 162 remaining) [2023-11-23 21:16:34,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (160 of 162 remaining) [2023-11-23 21:16:34,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (159 of 162 remaining) [2023-11-23 21:16:34,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (158 of 162 remaining) [2023-11-23 21:16:34,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (157 of 162 remaining) [2023-11-23 21:16:34,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (156 of 162 remaining) [2023-11-23 21:16:34,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (155 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (154 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (153 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (152 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (151 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (150 of 162 remaining) [2023-11-23 21:16:34,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (149 of 162 remaining) [2023-11-23 21:16:34,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (148 of 162 remaining) [2023-11-23 21:16:34,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (147 of 162 remaining) [2023-11-23 21:16:34,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (146 of 162 remaining) [2023-11-23 21:16:34,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (145 of 162 remaining) [2023-11-23 21:16:34,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (144 of 162 remaining) [2023-11-23 21:16:34,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (143 of 162 remaining) [2023-11-23 21:16:34,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (142 of 162 remaining) [2023-11-23 21:16:34,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (141 of 162 remaining) [2023-11-23 21:16:34,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 162 remaining) [2023-11-23 21:16:34,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 162 remaining) [2023-11-23 21:16:34,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 162 remaining) [2023-11-23 21:16:34,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 162 remaining) [2023-11-23 21:16:34,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 162 remaining) [2023-11-23 21:16:34,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStartErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 162 remaining) [2023-11-23 21:16:34,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 162 remaining) [2023-11-23 21:16:34,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (128 of 162 remaining) [2023-11-23 21:16:34,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 162 remaining) [2023-11-23 21:16:34,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 162 remaining) [2023-11-23 21:16:34,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 162 remaining) [2023-11-23 21:16:34,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 162 remaining) [2023-11-23 21:16:34,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 162 remaining) [2023-11-23 21:16:34,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 162 remaining) [2023-11-23 21:16:34,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 162 remaining) [2023-11-23 21:16:34,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 162 remaining) [2023-11-23 21:16:34,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (119 of 162 remaining) [2023-11-23 21:16:34,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASStopErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (118 of 162 remaining) [2023-11-23 21:16:34,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 162 remaining) [2023-11-23 21:16:34,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 162 remaining) [2023-11-23 21:16:34,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 162 remaining) [2023-11-23 21:16:34,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location status_updateErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 162 remaining) [2023-11-23 21:16:34,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 162 remaining) [2023-11-23 21:16:34,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 162 remaining) [2023-11-23 21:16:34,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 162 remaining) [2023-11-23 21:16:34,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 162 remaining) [2023-11-23 21:16:34,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 162 remaining) [2023-11-23 21:16:34,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 162 remaining) [2023-11-23 21:16:34,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 162 remaining) [2023-11-23 21:16:34,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 162 remaining) [2023-11-23 21:16:34,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 162 remaining) [2023-11-23 21:16:34,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 162 remaining) [2023-11-23 21:16:34,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 162 remaining) [2023-11-23 21:16:34,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 162 remaining) [2023-11-23 21:16:34,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 162 remaining) [2023-11-23 21:16:34,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 162 remaining) [2023-11-23 21:16:34,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 162 remaining) [2023-11-23 21:16:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 162 remaining) [2023-11-23 21:16:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 162 remaining) [2023-11-23 21:16:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 162 remaining) [2023-11-23 21:16:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 162 remaining) [2023-11-23 21:16:34,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 162 remaining) [2023-11-23 21:16:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 162 remaining) [2023-11-23 21:16:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 162 remaining) [2023-11-23 21:16:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 162 remaining) [2023-11-23 21:16:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 162 remaining) [2023-11-23 21:16:34,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 162 remaining) [2023-11-23 21:16:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 162 remaining) [2023-11-23 21:16:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 162 remaining) [2023-11-23 21:16:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 162 remaining) [2023-11-23 21:16:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 162 remaining) [2023-11-23 21:16:34,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 162 remaining) [2023-11-23 21:16:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 162 remaining) [2023-11-23 21:16:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 162 remaining) [2023-11-23 21:16:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 162 remaining) [2023-11-23 21:16:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 162 remaining) [2023-11-23 21:16:34,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 162 remaining) [2023-11-23 21:16:34,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 162 remaining) [2023-11-23 21:16:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 162 remaining) [2023-11-23 21:16:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 162 remaining) [2023-11-23 21:16:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 162 remaining) [2023-11-23 21:16:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 162 remaining) [2023-11-23 21:16:34,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 162 remaining) [2023-11-23 21:16:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 162 remaining) [2023-11-23 21:16:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 162 remaining) [2023-11-23 21:16:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 162 remaining) [2023-11-23 21:16:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 162 remaining) [2023-11-23 21:16:34,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 162 remaining) [2023-11-23 21:16:34,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 162 remaining) [2023-11-23 21:16:34,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 162 remaining) [2023-11-23 21:16:34,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 162 remaining) [2023-11-23 21:16:34,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 162 remaining) [2023-11-23 21:16:34,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 162 remaining) [2023-11-23 21:16:34,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 162 remaining) [2023-11-23 21:16:34,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 162 remaining) [2023-11-23 21:16:34,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 162 remaining) [2023-11-23 21:16:34,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 162 remaining) [2023-11-23 21:16:34,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 162 remaining) [2023-11-23 21:16:34,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 162 remaining) [2023-11-23 21:16:34,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 162 remaining) [2023-11-23 21:16:34,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 162 remaining) [2023-11-23 21:16:34,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 162 remaining) [2023-11-23 21:16:34,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 162 remaining) [2023-11-23 21:16:34,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 162 remaining) [2023-11-23 21:16:34,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 162 remaining) [2023-11-23 21:16:34,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 162 remaining) [2023-11-23 21:16:34,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 162 remaining) [2023-11-23 21:16:34,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 162 remaining) [2023-11-23 21:16:34,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 162 remaining) [2023-11-23 21:16:34,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 162 remaining) [2023-11-23 21:16:34,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 162 remaining) [2023-11-23 21:16:34,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 162 remaining) [2023-11-23 21:16:34,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 162 remaining) [2023-11-23 21:16:34,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location message_sendErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 162 remaining) [2023-11-23 21:16:34,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 162 remaining) [2023-11-23 21:16:34,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 162 remaining) [2023-11-23 21:16:34,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 162 remaining) [2023-11-23 21:16:34,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 162 remaining) [2023-11-23 21:16:34,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 162 remaining) [2023-11-23 21:16:34,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 162 remaining) [2023-11-23 21:16:34,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 162 remaining) [2023-11-23 21:16:34,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 162 remaining) [2023-11-23 21:16:34,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 162 remaining) [2023-11-23 21:16:34,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 162 remaining) [2023-11-23 21:16:34,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 162 remaining) [2023-11-23 21:16:34,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 162 remaining) [2023-11-23 21:16:34,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 162 remaining) [2023-11-23 21:16:34,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 162 remaining) [2023-11-23 21:16:34,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ASIdleErr12ASSERT_VIOLATIONMEMORY_LEAK (17 of 162 remaining) [2023-11-23 21:16:34,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 162 remaining) [2023-11-23 21:16:34,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 162 remaining) [2023-11-23 21:16:34,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 162 remaining) [2023-11-23 21:16:34,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 162 remaining) [2023-11-23 21:16:34,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 162 remaining) [2023-11-23 21:16:34,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 162 remaining) [2023-11-23 21:16:34,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 162 remaining) [2023-11-23 21:16:34,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 162 remaining) [2023-11-23 21:16:34,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 162 remaining) [2023-11-23 21:16:34,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 162 remaining) [2023-11-23 21:16:34,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 162 remaining) [2023-11-23 21:16:34,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 162 remaining) [2023-11-23 21:16:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-23 21:16:34,355 INFO L445 BasicCegarLoop]: Path program 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:34,361 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:16:34,410 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,411 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,411 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,411 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem79 [2023-11-23 21:16:34,412 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,412 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,413 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,417 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated [2023-11-23 21:16:34,419 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-11-23 21:16:34,419 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-23 21:16:34,419 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-23 21:16:34,420 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-11-23 21:16:34,420 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-23 21:16:34,427 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated [2023-11-23 21:16:34,429 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated [2023-11-23 21:16:34,429 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc59 [2023-11-23 21:16:34,430 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated [2023-11-23 21:16:34,431 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc59 [2023-11-23 21:16:34,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:16:34 BoogieIcfgContainer [2023-11-23 21:16:34,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:16:34,453 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:16:34,453 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:16:34,453 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:16:34,454 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:57" (3/4) ... [2023-11-23 21:16:34,455 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 21:16:34,471 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,472 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,472 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem79 [2023-11-23 21:16:34,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,473 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc78 [2023-11-23 21:16:34,475 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated [2023-11-23 21:16:34,477 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated [2023-11-23 21:16:34,480 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated [2023-11-23 21:16:34,481 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-23 21:16:34,483 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-11-23 21:16:34,483 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem35 [2023-11-23 21:16:34,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated [2023-11-23 21:16:34,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc59 [2023-11-23 21:16:34,486 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated [2023-11-23 21:16:34,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated [2023-11-23 21:16:34,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc59 [2023-11-23 21:16:34,544 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:16:34,544 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:16:34,545 INFO L158 Benchmark]: Toolchain (without parser) took 39995.46ms. Allocated memory was 151.0MB in the beginning and 427.8MB in the end (delta: 276.8MB). Free memory was 111.5MB in the beginning and 175.1MB in the end (delta: -63.6MB). Peak memory consumption was 213.6MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,546 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:16:34,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 997.89ms. Allocated memory is still 151.0MB. Free memory was 111.5MB in the beginning and 85.7MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.80ms. Allocated memory is still 151.0MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,552 INFO L158 Benchmark]: Boogie Preprocessor took 129.98ms. Allocated memory is still 151.0MB. Free memory was 82.8MB in the beginning and 79.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,555 INFO L158 Benchmark]: RCFGBuilder took 1566.08ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 79.4MB in the beginning and 164.3MB in the end (delta: -85.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,558 INFO L158 Benchmark]: TraceAbstraction took 37072.74ms. Allocated memory was 203.4MB in the beginning and 427.8MB in the end (delta: 224.4MB). Free memory was 164.3MB in the beginning and 180.3MB in the end (delta: -16.0MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,560 INFO L158 Benchmark]: Witness Printer took 91.59ms. Allocated memory is still 427.8MB. Free memory was 180.3MB in the beginning and 175.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:16:34,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 102.8MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 997.89ms. Allocated memory is still 151.0MB. Free memory was 111.5MB in the beginning and 85.7MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.80ms. Allocated memory is still 151.0MB. Free memory was 85.7MB in the beginning and 82.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.98ms. Allocated memory is still 151.0MB. Free memory was 82.8MB in the beginning and 79.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1566.08ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 79.4MB in the beginning and 164.3MB in the end (delta: -85.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 37072.74ms. Allocated memory was 203.4MB in the beginning and 427.8MB in the end (delta: 224.4MB). Free memory was 164.3MB in the beginning and 180.3MB in the end (delta: -16.0MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. * Witness Printer took 91.59ms. Allocated memory is still 427.8MB. Free memory was 180.3MB in the beginning and 175.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem79 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc59 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc59 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem79 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc78 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc59 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc59 - 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L779] user_t *user; [L975] user = malloc(sizeof(user_t)) [L976] CALL user_initialize() [L966] EXPR, FCALL calloc(1, sizeof(info_t)) VAL [user={-1:0}] [L966] user->info = calloc(1, sizeof(info_t)) VAL [user={-1:0}] [L967] user->message.id = 11 VAL [user={-1:0}] [L968] EXPR user->info VAL [user={-1:0}] [L968] user->info->is_valid = 0 [L969] user->status = AS_NULL VAL [user={-1:0}] [L970] user->user_id = 11 VAL [user={-1:0}] [L971] user->timeout = 3 [L976] RET user_initialize() [L977] event_t e = {0}; VAL [\old(argc)=79, argc=79, argv={84:81}, e={7:0}, user={-1:0}] [L978] e.primitive = _EVENT_START VAL [\old(argc)=79, argc=79, argv={84:81}, e={7:0}, user={-1:0}] [L979] CALL event_precess(&e) VAL [e={7:0}, user={-1:0}] [L943] EXPR user->status [L943] sys_state_t status = user->status; [L944] int rc = -1; VAL [e={7:0}, e={7:0}, rc=-1, status=1, user={-1:0}] [L945] COND TRUE status < AS_STATE_MAX [L947] case AS_NULL: VAL [e={7:0}, e={7:0}, rc=-1, status=1, user={-1:0}] [L948] CALL ASNull(e) VAL [e={7:0}, user={-1:0}] [L838] EXPR e->primitive [L838] e_primitive_t primitive = e->primitive; [L839] COND TRUE primitive == _EVENT_START VAL [e={7:0}, e={7:0}, primitive=0, user={-1:0}] [L840] CALL status_update(AS_START) VAL [\old(status)=2, user={-1:0}] [L814] COND TRUE status < AS_STATE_MAX VAL [\old(status)=2, status=2, user={-1:0}] [L815] EXPR user->status VAL [\old(status)=2, status=2, user={-1:0}] [L815] COND TRUE user->status != status [L816] user->status = status [L817] return 10; VAL [\old(status)=2, \result=10, status=2, user={-1:0}] [L840] RET status_update(AS_START) VAL [e={7:0}, e={7:0}, primitive=0, user={-1:0}] [L841] CALL system_initialize() VAL [user={-1:0}] [L829] event_t e = {0}; VAL [e={6:0}, user={-1:0}] [L830] EXPR user->info VAL [e={6:0}, user={-1:0}] [L830] EXPR user->info->is_valid VAL [e={6:0}, user={-1:0}] [L830] COND TRUE !user->info->is_valid [L831] e.primitive = _EVENT_CLOSE VAL [e={6:0}, user={-1:0}] [L835] CALL event_precess(&e) VAL [e={6:0}, user={-1:0}] [L943] EXPR user->status [L943] sys_state_t status = user->status; [L944] int rc = -1; VAL [e={6:0}, e={6:0}, rc=-1, status=2, user={-1:0}] [L945] COND TRUE status < AS_STATE_MAX [L947] case AS_NULL: [L950] case AS_START: VAL [e={6:0}, e={6:0}, rc=-1, status=2, user={-1:0}] [L951] CALL ASStart(e) VAL [e={6:0}, user={-1:0}] [L881] EXPR e->primitive [L881] e_primitive_t primitive = e->primitive; [L882] int rc = -1; [L884] case _EVENT_OPEN: [L898] case _EVENT_CLOSE: [L899] message_t *message = &user->message; [L900] EXPR, FCALL calloc(0, sizeof(*message)) VAL [e={6:0}, e={6:0}, message={-1:16}, primitive=3, rc=-1, user={-1:0}] [L900] message = calloc(0, sizeof(*message)) VAL [e={6:0}, e={6:0}, message={-3:0}, primitive=3, rc=-1, user={-1:0}] [L901] message->id = 3 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 973]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 358 locations, 162 error locations. Started 1 CEGAR loops. OverallTime: 36.9s, OverallIterations: 33, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4566 SdHoareTripleChecker+Valid, 19.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4538 mSDsluCounter, 32502 SdHoareTripleChecker+Invalid, 16.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23556 mSDsCounter, 766 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22697 IncrementalHoareTripleChecker+Invalid, 23463 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 766 mSolverCounterUnsat, 8946 mSDtfsCounter, 22697 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 365 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=814occurred in iteration=30, InterpolantAutomatonStates: 246, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 32 MinimizatonAttempts, 657 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 1168 NumberOfCodeBlocks, 1168 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1083 ConstructedInterpolants, 0 QuantifiedInterpolants, 5529 SizeOfPredicates, 21 NumberOfNonLiveVariables, 464 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 33 InterpolantComputations, 32 PerfectInterpolantSequences, 75/76 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 21:16:34,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58dbc588-52ce-4dc9-9dd3-1f9655e7d0a3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0