./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0d89b9bb6440b8a8be3e0bf87cd6d3f6e054e43e6429198b179543019b622d90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:13:55,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:13:55,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:13:55,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:13:55,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:13:55,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:13:55,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:13:55,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:13:55,715 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:13:55,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:13:55,716 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:13:55,717 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:13:55,718 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:13:55,718 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:13:55,719 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:13:55,720 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:13:55,720 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:13:55,721 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:13:55,721 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:13:55,722 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:13:55,723 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:13:55,723 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:13:55,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:13:55,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:13:55,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:13:55,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:13:55,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:13:55,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:13:55,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:13:55,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:13:55,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:13:55,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:13:55,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:13:55,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:13:55,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:13:55,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:13:55,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:13:55,735 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:13:55,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:13:55,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:13:55,735 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:13:55,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:13:55,736 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_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d89b9bb6440b8a8be3e0bf87cd6d3f6e054e43e6429198b179543019b622d90 [2023-11-19 04:13:56,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:13:56,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:13:56,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:13:56,099 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:13:56,100 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:13:56,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i [2023-11-19 04:13:59,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:13:59,901 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:13:59,902 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i [2023-11-19 04:13:59,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/data/3b1874411/457412dde90749cb913a564285226146/FLAG641b39c65 [2023-11-19 04:14:00,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/data/3b1874411/457412dde90749cb913a564285226146 [2023-11-19 04:14:00,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:00,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:00,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:00,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:00,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:00,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55403a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:00, skipping insertion in model container [2023-11-19 04:14:00,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:00" (1/1) ... [2023-11-19 04:14:00,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:00,587 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3761] [2023-11-19 04:14:00,588 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3762-3763] [2023-11-19 04:14:00,775 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 04:14:00,804 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i[114791,114804] [2023-11-19 04:14:01,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:01,666 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:01,807 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3761] [2023-11-19 04:14:01,807 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3762-3763] [2023-11-19 04:14:01,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3846-3847] [2023-11-19 04:14:01,830 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 04:14:01,832 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i[114791,114804] [2023-11-19 04:14:02,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:02,236 WARN L675 CHandler]: The function ldv_is_err is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:02,237 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:02,238 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:02,245 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:02,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02 WrapperNode [2023-11-19 04:14:02,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:02,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:02,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:02,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:02,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,454 INFO L138 Inliner]: procedures = 224, calls = 1669, calls flagged for inlining = 101, calls inlined = 89, statements flattened = 3289 [2023-11-19 04:14:02,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:02,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:02,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:02,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:02,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:02,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:02,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:02,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:02,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (1/1) ... [2023-11-19 04:14:02,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:02,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:02,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:02,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17e564ba-5bc8-4076-a51e-9d1cb200f754/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure hw_param_interval_c [2023-11-19 04:14:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_param_interval_c [2023-11-19 04:14:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-19 04:14:02,856 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-19 04:14:02,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:14:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:14:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-19 04:14:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-19 04:14:02,857 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_prepare [2023-11-19 04:14:02,857 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_prepare [2023-11-19 04:14:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:14:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:14:02,858 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_period_elapsed [2023-11-19 04:14:02,858 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_period_elapsed [2023-11-19 04:14:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 04:14:02,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 04:14:02,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:14:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:14:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:14:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:14:02,860 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_start [2023-11-19 04:14:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_start [2023-11-19 04:14:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_free [2023-11-19 04:14:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_free [2023-11-19 04:14:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-19 04:14:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-19 04:14:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_prepare [2023-11-19 04:14:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_prepare [2023-11-19 04:14:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:14:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:14:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_unregister_all [2023-11-19 04:14:02,863 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_unregister_all [2023-11-19 04:14:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:14:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:14:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_set_ops [2023-11-19 04:14:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_set_ops [2023-11-19 04:14:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_free [2023-11-19 04:14:02,864 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_free [2023-11-19 04:14:02,864 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 04:14:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 04:14:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_pointer [2023-11-19 04:14:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_pointer [2023-11-19 04:14:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2023-11-19 04:14:02,865 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2023-11-19 04:14:02,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:14:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_pointer [2023-11-19 04:14:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_pointer [2023-11-19 04:14:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 04:14:02,866 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_remove [2023-11-19 04:14:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_remove [2023-11-19 04:14:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:14:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 04:14:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 04:14:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_start [2023-11-19 04:14:02,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_start [2023-11-19 04:14:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 04:14:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2023-11-19 04:14:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2023-11-19 04:14:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_create [2023-11-19 04:14:02,869 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_create [2023-11-19 04:14:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_probe [2023-11-19 04:14:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_probe [2023-11-19 04:14:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure free_fake_buffer [2023-11-19 04:14:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure free_fake_buffer [2023-11-19 04:14:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_silence [2023-11-19 04:14:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_silence [2023-11-19 04:14:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:14:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:14:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_hw_free [2023-11-19 04:14:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_hw_free [2023-11-19 04:14:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:14:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:14:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 04:14:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 04:14:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_stop [2023-11-19 04:14:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_stop [2023-11-19 04:14:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_close [2023-11-19 04:14:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_close [2023-11-19 04:14:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:14:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:14:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_update [2023-11-19 04:14:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_update [2023-11-19 04:14:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_copy [2023-11-19 04:14:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_copy [2023-11-19 04:14:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:14:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:14:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_prepare [2023-11-19 04:14:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_prepare [2023-11-19 04:14:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 04:14:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 04:14:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 04:14:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 04:14:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:14:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 04:14:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_page [2023-11-19 04:14:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_page [2023-11-19 04:14:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:14:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_resume [2023-11-19 04:14:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_resume [2023-11-19 04:14:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:14:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:14:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_rearm [2023-11-19 04:14:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_rearm [2023-11-19 04:14:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:14:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~~ktime_t~0 [2023-11-19 04:14:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~~ktime_t~0 [2023-11-19 04:14:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_create [2023-11-19 04:14:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_create [2023-11-19 04:14:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2023-11-19 04:14:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2023-11-19 04:14:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:14:02,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:14:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:14:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~snd_pcm_uframes_t~0 [2023-11-19 04:14:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~snd_pcm_uframes_t~0 [2023-11-19 04:14:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure emu10k1_playback_constraints [2023-11-19 04:14:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure emu10k1_playback_constraints [2023-11-19 04:14:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_trigger [2023-11-19 04:14:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_trigger [2023-11-19 04:14:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:14:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-19 04:14:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-19 04:14:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:14:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:14:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2023-11-19 04:14:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2023-11-19 04:14:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 04:14:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 04:14:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_systimer_stop [2023-11-19 04:14:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_systimer_stop [2023-11-19 04:14:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_hrtimer_sync [2023-11-19 04:14:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_hrtimer_sync [2023-11-19 04:14:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure snd_power_change_state [2023-11-19 04:14:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_power_change_state [2023-11-19 04:14:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cb_get_time [2023-11-19 04:14:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cb_get_time [2023-11-19 04:14:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_pointer [2023-11-19 04:14:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_pointer [2023-11-19 04:14:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2023-11-19 04:14:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2023-11-19 04:14:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-19 04:14:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-19 04:14:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure snd_dummy_suspend [2023-11-19 04:14:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_dummy_suspend [2023-11-19 04:14:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_open [2023-11-19 04:14:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_open [2023-11-19 04:14:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 04:14:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 04:14:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_pcm_hw_params [2023-11-19 04:14:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_pcm_hw_params [2023-11-19 04:14:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:14:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 04:14:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 04:14:03,510 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:03,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:04,032 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:14:08,286 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:14:09,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:14:09,602 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:14:09,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:09 BoogieIcfgContainer [2023-11-19 04:14:09,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:14:09,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:14:09,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:14:09,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:14:09,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:00" (1/3) ... [2023-11-19 04:14:09,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9176951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:09, skipping insertion in model container [2023-11-19 04:14:09,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:02" (2/3) ... [2023-11-19 04:14:09,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9176951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:14:09, skipping insertion in model container [2023-11-19 04:14:09,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:14:09" (3/3) ... [2023-11-19 04:14:09,621 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-dummy.ko-entry_point.cil.out.i [2023-11-19 04:14:09,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:14:09,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:14:09,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:14:09,731 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@531cf84b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:14:09,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:14:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 749 states, 488 states have (on average 1.430327868852459) internal successors, (698), 501 states have internal predecessors, (698), 190 states have call successors, (190), 70 states have call predecessors, (190), 69 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-19 04:14:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:14:09,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:09,773 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:09,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:09,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1375404139, now seen corresponding path program 1 times [2023-11-19 04:14:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825426650] [2023-11-19 04:14:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:14:10,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825426650] [2023-11-19 04:14:10,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825426650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:10,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:10,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025377150] [2023-11-19 04:14:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:10,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:10,767 INFO L87 Difference]: Start difference. First operand has 749 states, 488 states have (on average 1.430327868852459) internal successors, (698), 501 states have internal predecessors, (698), 190 states have call successors, (190), 70 states have call predecessors, (190), 69 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:13,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:16,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:18,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:20,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:20,115 INFO L93 Difference]: Finished difference Result 2168 states and 3149 transitions. [2023-11-19 04:14:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:20,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2023-11-19 04:14:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:20,196 INFO L225 Difference]: With dead ends: 2168 [2023-11-19 04:14:20,196 INFO L226 Difference]: Without dead ends: 1416 [2023-11-19 04:14:20,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:20,218 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1011 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:20,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1826 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2023-11-19 04:14:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-19 04:14:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1412. [2023-11-19 04:14:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 934 states have (on average 1.4068522483940042) internal successors, (1314), 939 states have internal predecessors, (1314), 342 states have call successors, (342), 136 states have call predecessors, (342), 135 states have return successors, (341), 338 states have call predecessors, (341), 341 states have call successors, (341) [2023-11-19 04:14:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1997 transitions. [2023-11-19 04:14:20,504 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1997 transitions. Word has length 74 [2023-11-19 04:14:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:20,505 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1997 transitions. [2023-11-19 04:14:20,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1997 transitions. [2023-11-19 04:14:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 04:14:20,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:20,515 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:14:20,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:20,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1026300756, now seen corresponding path program 1 times [2023-11-19 04:14:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439950406] [2023-11-19 04:14:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:14:21,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439950406] [2023-11-19 04:14:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439950406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:21,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:21,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689839185] [2023-11-19 04:14:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:21,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:21,019 INFO L87 Difference]: Start difference. First operand 1412 states and 1997 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:23,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:26,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:28,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:30,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:30,535 INFO L93 Difference]: Finished difference Result 4123 states and 5815 transitions. [2023-11-19 04:14:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2023-11-19 04:14:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:30,564 INFO L225 Difference]: With dead ends: 4123 [2023-11-19 04:14:30,564 INFO L226 Difference]: Without dead ends: 2735 [2023-11-19 04:14:30,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:30,573 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 977 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:30,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1821 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2023-11-19 04:14:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-11-19 04:14:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2730. [2023-11-19 04:14:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 1806 states have (on average 1.4058693244739757) internal successors, (2539), 1817 states have internal predecessors, (2539), 654 states have call successors, (654), 270 states have call predecessors, (654), 269 states have return successors, (653), 646 states have call predecessors, (653), 653 states have call successors, (653) [2023-11-19 04:14:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3846 transitions. [2023-11-19 04:14:30,749 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3846 transitions. Word has length 76 [2023-11-19 04:14:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:30,749 INFO L495 AbstractCegarLoop]: Abstraction has 2730 states and 3846 transitions. [2023-11-19 04:14:30,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3846 transitions. [2023-11-19 04:14:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 04:14:30,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:30,755 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:30,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:14:30,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:30,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 411744079, now seen corresponding path program 1 times [2023-11-19 04:14:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127478306] [2023-11-19 04:14:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:14:31,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127478306] [2023-11-19 04:14:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127478306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:31,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:31,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:31,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198976559] [2023-11-19 04:14:31,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:31,212 INFO L87 Difference]: Start difference. First operand 2730 states and 3846 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:33,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:36,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:37,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:39,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:41,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:42,093 INFO L93 Difference]: Finished difference Result 7821 states and 10954 transitions. [2023-11-19 04:14:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2023-11-19 04:14:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:42,138 INFO L225 Difference]: With dead ends: 7821 [2023-11-19 04:14:42,138 INFO L226 Difference]: Without dead ends: 5115 [2023-11-19 04:14:42,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:42,155 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 896 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:42,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1828 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2023-11-19 04:14:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2023-11-19 04:14:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5110. [2023-11-19 04:14:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 3370 states have (on average 1.3967359050445103) internal successors, (4707), 3393 states have internal predecessors, (4707), 1214 states have call successors, (1214), 526 states have call predecessors, (1214), 525 states have return successors, (1213), 1198 states have call predecessors, (1213), 1213 states have call successors, (1213) [2023-11-19 04:14:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 7134 transitions. [2023-11-19 04:14:42,481 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 7134 transitions. Word has length 91 [2023-11-19 04:14:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:42,482 INFO L495 AbstractCegarLoop]: Abstraction has 5110 states and 7134 transitions. [2023-11-19 04:14:42,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 7134 transitions. [2023-11-19 04:14:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 04:14:42,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:42,488 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:14:42,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:42,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1144230927, now seen corresponding path program 1 times [2023-11-19 04:14:42,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785801935] [2023-11-19 04:14:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:14:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:14:42,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:14:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785801935] [2023-11-19 04:14:42,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785801935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:14:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:14:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:14:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948753679] [2023-11-19 04:14:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:14:42,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:14:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:14:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:14:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:42,963 INFO L87 Difference]: Start difference. First operand 5110 states and 7134 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:47,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:50,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:14:50,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:14:50,515 INFO L93 Difference]: Finished difference Result 14107 states and 19619 transitions. [2023-11-19 04:14:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:14:50,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2023-11-19 04:14:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:14:50,588 INFO L225 Difference]: With dead ends: 14107 [2023-11-19 04:14:50,589 INFO L226 Difference]: Without dead ends: 9021 [2023-11-19 04:14:50,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:14:50,616 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 924 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:14:50,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 2220 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2023-11-19 04:14:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9021 states. [2023-11-19 04:14:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9021 to 9018. [2023-11-19 04:14:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 5974 states have (on average 1.3957147639772347) internal successors, (8338), 6009 states have internal predecessors, (8338), 2086 states have call successors, (2086), 958 states have call predecessors, (2086), 957 states have return successors, (2085), 2066 states have call predecessors, (2085), 2085 states have call successors, (2085) [2023-11-19 04:14:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12509 transitions. [2023-11-19 04:14:51,266 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12509 transitions. Word has length 93 [2023-11-19 04:14:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:14:51,267 INFO L495 AbstractCegarLoop]: Abstraction has 9018 states and 12509 transitions. [2023-11-19 04:14:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:14:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12509 transitions. [2023-11-19 04:14:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 04:14:51,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:14:51,279 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:14:51,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:14:51,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:14:51,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:14:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash -147519608, now seen corresponding path program 1 times [2023-11-19 04:14:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:14:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662761749] [2023-11-19 04:14:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:14:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:14:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat