./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/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_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire --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 177820d4eabfc5ee57ceefc8e45d1c58baa48df59132cf6258d84a611844e62c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:22,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:22,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:10:22,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:22,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:22,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:22,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:22,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:22,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:22,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:22,412 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:22,413 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:22,414 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:22,416 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:22,416 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:22,417 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:22,417 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:22,418 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:22,419 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:22,419 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:22,420 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:22,421 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:22,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:22,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:22,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:22,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:22,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:22,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:22,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:22,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:22,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:22,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:22,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:22,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:22,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:22,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:22,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:22,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:22,429 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:22,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:22,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:22,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:22,430 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:22,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:22,431 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_a61a0521-b355-4670-971a-0e8ade474821/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 177820d4eabfc5ee57ceefc8e45d1c58baa48df59132cf6258d84a611844e62c [2023-11-23 21:10:22,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:22,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:22,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:22,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:22,820 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:22,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-11-23 21:10:25,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:26,561 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:26,561 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-11-23 21:10:26,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/data/eb4755fe0/149dac5df0db4a87af8270e8b1c0671d/FLAG818493355 [2023-11-23 21:10:26,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/data/eb4755fe0/149dac5df0db4a87af8270e8b1c0671d [2023-11-23 21:10:26,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:26,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:26,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:26,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:26,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:26,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:26" (1/1) ... [2023-11-23 21:10:26,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14851dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:26, skipping insertion in model container [2023-11-23 21:10:26,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:26" (1/1) ... [2023-11-23 21:10:26,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:27,416 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2023-11-23 21:10:27,431 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2023-11-23 21:10:27,431 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2023-11-23 21:10:27,762 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_a61a0521-b355-4670-971a-0e8ade474821/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i[151293,151306] [2023-11-23 21:10:28,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:28,768 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:28,880 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2023-11-23 21:10:28,894 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2023-11-23 21:10:28,894 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2023-11-23 21:10:28,896 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 %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [4906] [2023-11-23 21:10:28,905 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_a61a0521-b355-4670-971a-0e8ade474821/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i[151293,151306] [2023-11-23 21:10:29,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:29,304 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:29,312 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:29,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29 WrapperNode [2023-11-23 21:10:29,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:29,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:29,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:29,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:29,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:29,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:30,530 INFO L138 Inliner]: procedures = 183, calls = 2530, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 5320 [2023-11-23 21:10:30,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:30,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:30,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:30,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:30,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:30,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:31,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:31,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:32,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:32,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:32,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:32,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (1/1) ... [2023-11-23 21:10:32,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:32,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:32,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 21:10:32,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2023-11-23 21:10:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 21:10:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_try_fmt [2023-11-23 21:10:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_try_fmt [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:10:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:10:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_frame_size [2023-11-23 21:10:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_frame_size [2023-11-23 21:10:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:10:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:10:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:10:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dma_contig_free [2023-11-23 21:10:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dma_contig_free [2023-11-23 21:10:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:10:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:10:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_poll [2023-11-23 21:10:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_poll [2023-11-23 21:10:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:10:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:10:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:10:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:10:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:10:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:10:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:10:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:10:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:10:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:10:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:10:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:10:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:10:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_querystd [2023-11-23 21:10:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_querystd [2023-11-23 21:10:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2023-11-23 21:10:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2023-11-23 21:10:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_mmap [2023-11-23 21:10:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_mmap [2023-11-23 21:10:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:10:32,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:10:32,767 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2023-11-23 21:10:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2023-11-23 21:10:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:10:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:10:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:10:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:10:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:10:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:10:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:10:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_get_norm [2023-11-23 21:10:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_get_norm [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:10:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2023-11-23 21:10:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2023-11-23 21:10:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:10:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:10:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2023-11-23 21:10:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2023-11-23 21:10:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2023-11-23 21:10:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2023-11-23 21:10:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:10:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 21:10:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 21:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_cap_set [2023-11-23 21:10:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_cap_set [2023-11-23 21:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:10:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:10:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_bytes_per_line [2023-11-23 21:10:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_bytes_per_line [2023-11-23 21:10:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:10:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:10:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:10:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-23 21:10:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:32,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:33,538 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:33,541 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:33,682 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:10:45,333 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:46,974 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:46,974 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:10:46,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:46 BoogieIcfgContainer [2023-11-23 21:10:46,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:46,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:46,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:46,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:46,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:26" (1/3) ... [2023-11-23 21:10:46,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:46, skipping insertion in model container [2023-11-23 21:10:46,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:29" (2/3) ... [2023-11-23 21:10:46,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:46, skipping insertion in model container [2023-11-23 21:10:46,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:46" (3/3) ... [2023-11-23 21:10:46,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2023-11-23 21:10:47,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:47,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:10:47,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:47,099 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;@52e8065d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:47,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:10:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 428 states have (on average 1.3621495327102804) internal successors, (583), 439 states have internal predecessors, (583), 203 states have call successors, (203), 35 states have call predecessors, (203), 34 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-23 21:10:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-23 21:10:47,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:47,158 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:47,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:47,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1382602641, now seen corresponding path program 1 times [2023-11-23 21:10:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:47,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896044006] [2023-11-23 21:10:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2023-11-23 21:10:48,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:48,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896044006] [2023-11-23 21:10:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896044006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:48,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:48,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:10:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628710919] [2023-11-23 21:10:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:48,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:48,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:48,344 INFO L87 Difference]: Start difference. First operand has 667 states, 428 states have (on average 1.3621495327102804) internal successors, (583), 439 states have internal predecessors, (583), 203 states have call successors, (203), 35 states have call predecessors, (203), 34 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-11-23 21:10:51,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:10:54,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:10:57,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:10:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:58,109 INFO L93 Difference]: Finished difference Result 1724 states and 2530 transitions. [2023-11-23 21:10:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:10:58,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 272 [2023-11-23 21:10:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:58,153 INFO L225 Difference]: With dead ends: 1724 [2023-11-23 21:10:58,153 INFO L226 Difference]: Without dead ends: 1117 [2023-11-23 21:10:58,162 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 [2023-11-23 21:10:58,166 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 793 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:58,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1629 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-11-23 21:10:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-23 21:10:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1116. [2023-11-23 21:10:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 739 states have (on average 1.3572395128552097) internal successors, (1003), 744 states have internal predecessors, (1003), 313 states have call successors, (313), 64 states have call predecessors, (313), 63 states have return successors, (312), 311 states have call predecessors, (312), 312 states have call successors, (312) [2023-11-23 21:10:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1628 transitions. [2023-11-23 21:10:58,374 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1628 transitions. Word has length 272 [2023-11-23 21:10:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:58,380 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1628 transitions. [2023-11-23 21:10:58,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-11-23 21:10:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1628 transitions. [2023-11-23 21:10:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-11-23 21:10:58,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:58,404 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:10:58,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:58,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1368605421, now seen corresponding path program 1 times [2023-11-23 21:10:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186964609] [2023-11-23 21:10:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3466 trivial. 0 not checked. [2023-11-23 21:11:00,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:11:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186964609] [2023-11-23 21:11:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186964609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:00,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:11:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473438671] [2023-11-23 21:11:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:00,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:11:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:11:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:11:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:11:00,348 INFO L87 Difference]: Start difference. First operand 1116 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-11-23 21:11:03,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:05,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:09,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:11,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:13,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:11:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:15,555 INFO L93 Difference]: Finished difference Result 2115 states and 3099 transitions. [2023-11-23 21:11:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:11:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 324 [2023-11-23 21:11:15,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:15,576 INFO L225 Difference]: With dead ends: 2115 [2023-11-23 21:11:15,576 INFO L226 Difference]: Without dead ends: 2112 [2023-11-23 21:11:15,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:11:15,580 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 826 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:15,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 2485 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 5 Unknown, 0 Unchecked, 15.0s Time] [2023-11-23 21:11:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2023-11-23 21:11:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2098. [2023-11-23 21:11:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 1408 states have (on average 1.3728693181818181) internal successors, (1933), 1420 states have internal predecessors, (1933), 574 states have call successors, (574), 118 states have call predecessors, (574), 115 states have return successors, (573), 565 states have call predecessors, (573), 573 states have call successors, (573) [2023-11-23 21:11:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3080 transitions. [2023-11-23 21:11:15,883 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3080 transitions. Word has length 324 [2023-11-23 21:11:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:15,885 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3080 transitions. [2023-11-23 21:11:15,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-11-23 21:11:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3080 transitions. [2023-11-23 21:11:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-11-23 21:11:15,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:15,903 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:15,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:11:15,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:11:15,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -518956258, now seen corresponding path program 1 times [2023-11-23 21:11:15,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:11:15,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780702546] [2023-11-23 21:11:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:11:16,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:11:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207524422] [2023-11-23 21:11:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:11:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:16,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:11:16,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a61a0521-b355-4670-971a-0e8ade474821/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process