./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/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_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E --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 0.3.0-dev-826ab2b [2024-11-14 03:00:45,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:00:46,021 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 03:00:46,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:00:46,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:00:46,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:00:46,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:00:46,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:00:46,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:00:46,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:00:46,069 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:00:46,069 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:00:46,070 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:00:46,070 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:00:46,071 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:00:46,071 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:00:46,071 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:00:46,071 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:00:46,071 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:00:46,071 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:00:46,072 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:00:46,072 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:00:46,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:00:46,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:00:46,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:00:46,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:00:46,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:00:46,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:00:46,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:00:46,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:00:46,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:00:46,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:00:46,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:00:46,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:00:46,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:00:46,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:00:46,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:00:46,076 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:00:46,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:00:46,077 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E 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 [2024-11-14 03:00:46,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:00:46,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:00:46,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:00:46,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:00:46,480 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:00:46,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-14 03:00:48,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:00:49,188 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:00:49,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i [2024-11-14 03:00:49,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/data/55a42af24/d5c72b025cac4e399e7c618dd12e25b7/FLAGd93445616 [2024-11-14 03:00:49,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/data/55a42af24/d5c72b025cac4e399e7c618dd12e25b7 [2024-11-14 03:00:49,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:00:49,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:00:49,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:00:49,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:00:49,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:00:49,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:00:49" (1/1) ... [2024-11-14 03:00:49,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f585a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:49, skipping insertion in model container [2024-11-14 03:00:49,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:00:49" (1/1) ... [2024-11-14 03:00:49,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:00:50,116 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2024-11-14 03:00:50,144 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2024-11-14 03:00:50,145 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2024-11-14 03:00:50,529 WARN L250 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_e7873aea-8760-4a17-befc-7c172b96c1bf/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] [2024-11-14 03:00:51,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:00:51,473 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:00:51,671 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4300] [2024-11-14 03:00:51,691 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4822] [2024-11-14 03:00:51,691 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4823-4824] [2024-11-14 03:00:51,694 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] [2024-11-14 03:00:51,717 WARN L250 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_e7873aea-8760-4a17-befc-7c172b96c1bf/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] [2024-11-14 03:00:52,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:00:52,224 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:00:52,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52 WrapperNode [2024-11-14 03:00:52,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:00:52,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:00:52,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:00:52,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:00:52,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:52,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:53,204 INFO L138 Inliner]: procedures = 183, calls = 2514, calls flagged for inlining = 108, calls inlined = 97, statements flattened = 5575 [2024-11-14 03:00:53,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:00:53,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:00:53,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:00:53,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:00:53,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:53,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:53,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:53,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:00:54,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:00:54,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:00:54,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:00:54,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (1/1) ... [2024-11-14 03:00:54,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:00:54,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:00:54,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:00:54,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:00:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-14 03:00:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-14 03:00:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2024-11-14 03:00:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2024-11-14 03:00:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2024-11-14 03:00:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2024-11-14 03:00:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 03:00:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_try_fmt [2024-11-14 03:00:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_try_fmt [2024-11-14 03:00:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-14 03:00:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 03:00:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_frame_size [2024-11-14 03:00:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_frame_size [2024-11-14 03:00:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 03:00:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 03:00:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:00:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dma_contig_free [2024-11-14 03:00:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dma_contig_free [2024-11-14 03:00:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-14 03:00:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-14 03:00:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_poll [2024-11-14 03:00:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_poll [2024-11-14 03:00:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-14 03:00:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-14 03:00:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:00:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:00:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-14 03:00:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-14 03:00:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:00:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-14 03:00:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-14 03:00:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 03:00:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 03:00:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-11-14 03:00:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-11-14 03:00:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_querystd [2024-11-14 03:00:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_querystd [2024-11-14 03:00:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2024-11-14 03:00:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2024-11-14 03:00:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_mmap [2024-11-14 03:00:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_mmap [2024-11-14 03:00:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-14 03:00:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2024-11-14 03:00:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 03:00:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:00:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-14 03:00:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-14 03:00:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2024-11-14 03:00:54,811 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2024-11-14 03:00:54,811 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_get_norm [2024-11-14 03:00:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_get_norm [2024-11-14 03:00:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:00:54,813 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2024-11-14 03:00:54,813 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-14 03:00:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2024-11-14 03:00:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2024-11-14 03:00:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-14 03:00:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:00:54,814 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_cap_set [2024-11-14 03:00:54,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_cap_set [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-14 03:00:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-14 03:00:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure timblogiw_bytes_per_line [2024-11-14 03:00:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure timblogiw_bytes_per_line [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-14 03:00:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-14 03:00:54,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:00:54,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:00:55,921 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:00:55,924 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:00:56,152 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 03:01:15,111 INFO L? ?]: Removed 1404 outVars from TransFormulas that were not future-live. [2024-11-14 03:01:15,111 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:01:17,522 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:01:17,522 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:01:17,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:01:17 BoogieIcfgContainer [2024-11-14 03:01:17,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:01:17,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:01:17,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:01:17,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:01:17,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:00:49" (1/3) ... [2024-11-14 03:01:17,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695065f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:01:17, skipping insertion in model container [2024-11-14 03:01:17,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:00:52" (2/3) ... [2024-11-14 03:01:17,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695065f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:01:17, skipping insertion in model container [2024-11-14 03:01:17,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:01:17" (3/3) ... [2024-11-14 03:01:17,541 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 [2024-11-14 03:01:17,562 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:01:17,564 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--media--platform--timblogiw.ko-entry_point.cil.out.i that has 36 procedures, 669 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 03:01:17,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:01:17,696 INFO L333 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, 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;@52f3f8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:01:17,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:01:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 429 states have (on average 1.3613053613053614) internal successors, (584), 440 states have internal predecessors, (584), 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) [2024-11-14 03:01:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-14 03:01:17,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:17,743 INFO L215 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] [2024-11-14 03:01:17,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:17,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 729897410, now seen corresponding path program 1 times [2024-11-14 03:01:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:17,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103361920] [2024-11-14 03:01:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:17,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2398 trivial. 0 not checked. [2024-11-14 03:01:42,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103361920] [2024-11-14 03:01:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103361920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:42,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:01:42,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184344472] [2024-11-14 03:01:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:42,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:01:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:01:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:01:42,986 INFO L87 Difference]: Start difference. First operand has 668 states, 429 states have (on average 1.3613053613053614) internal successors, (584), 440 states have internal predecessors, (584), 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) [2024-11-14 03:01:45,150 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 [] [2024-11-14 03:01:47,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:01:51,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:01:53,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:01:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:55,051 INFO L93 Difference]: Finished difference Result 1727 states and 2533 transitions. [2024-11-14 03:01:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:01:55,055 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 [2024-11-14 03:01:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:55,088 INFO L225 Difference]: With dead ends: 1727 [2024-11-14 03:01:55,088 INFO L226 Difference]: Without dead ends: 1119 [2024-11-14 03:01:55,094 INFO L431 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 [2024-11-14 03:01:55,098 INFO L432 NwaCegarLoop]: 886 mSDtfsCounter, 794 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:55,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1631 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2024-11-14 03:01:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-14 03:01:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1118. [2024-11-14 03:01:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 741 states have (on average 1.3562753036437247) internal successors, (1005), 746 states have internal predecessors, (1005), 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) [2024-11-14 03:01:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1630 transitions. [2024-11-14 03:01:55,313 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1630 transitions. Word has length 272 [2024-11-14 03:01:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:55,318 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1630 transitions. [2024-11-14 03:01:55,319 INFO L472 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) [2024-11-14 03:01:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1630 transitions. [2024-11-14 03:01:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-14 03:01:55,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:55,342 INFO L215 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] [2024-11-14 03:01:55,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:01:55,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:55,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:55,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1127044129, now seen corresponding path program 1 times [2024-11-14 03:01:55,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:55,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914860287] [2024-11-14 03:01:55,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:55,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3466 trivial. 0 not checked. [2024-11-14 03:02:21,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914860287] [2024-11-14 03:02:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914860287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:02:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490560318] [2024-11-14 03:02:21,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:21,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:02:21,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:02:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:02:21,121 INFO L87 Difference]: Start difference. First operand 1118 states and 1630 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) [2024-11-14 03:02:23,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:25,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:28,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:30,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:34,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:36,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:39,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:02:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:41,170 INFO L93 Difference]: Finished difference Result 2119 states and 3103 transitions. [2024-11-14 03:02:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:02:41,172 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 [2024-11-14 03:02:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:41,189 INFO L225 Difference]: With dead ends: 2119 [2024-11-14 03:02:41,190 INFO L226 Difference]: Without dead ends: 2116 [2024-11-14 03:02:41,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:02:41,192 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 827 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:41,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2488 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 7 Unknown, 0 Unchecked, 19.8s Time] [2024-11-14 03:02:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2024-11-14 03:02:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2102. [2024-11-14 03:02:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 1412 states have (on average 1.3718130311614731) internal successors, (1937), 1424 states have internal predecessors, (1937), 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) [2024-11-14 03:02:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3084 transitions. [2024-11-14 03:02:41,357 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3084 transitions. Word has length 324 [2024-11-14 03:02:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:41,359 INFO L471 AbstractCegarLoop]: Abstraction has 2102 states and 3084 transitions. [2024-11-14 03:02:41,359 INFO L472 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) [2024-11-14 03:02:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3084 transitions. [2024-11-14 03:02:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-14 03:02:41,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:41,378 INFO L215 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] [2024-11-14 03:02:41,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:02:41,378 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:41,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1969682206, now seen corresponding path program 1 times [2024-11-14 03:02:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000303464] [2024-11-14 03:02:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2024-11-14 03:03:05,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000303464] [2024-11-14 03:03:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000303464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:05,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:05,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830976923] [2024-11-14 03:03:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:05,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:05,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:05,558 INFO L87 Difference]: Start difference. First operand 2102 states and 3084 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-14 03:03:07,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:03:09,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:03:13,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:03:15,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:03:18,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:03:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:21,575 INFO L93 Difference]: Finished difference Result 6032 states and 8834 transitions. [2024-11-14 03:03:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 378 [2024-11-14 03:03:21,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:21,602 INFO L225 Difference]: With dead ends: 6032 [2024-11-14 03:03:21,603 INFO L226 Difference]: Without dead ends: 4009 [2024-11-14 03:03:21,611 INFO L431 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 [2024-11-14 03:03:21,613 INFO L432 NwaCegarLoop]: 1380 mSDtfsCounter, 798 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:21,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2199 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 240 Invalid, 5 Unknown, 0 Unchecked, 15.8s Time] [2024-11-14 03:03:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2024-11-14 03:03:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 4006. [2024-11-14 03:03:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4006 states, 2715 states have (on average 1.3705340699815838) internal successors, (3721), 2733 states have internal predecessors, (3721), 1060 states have call successors, (1060), 235 states have call predecessors, (1060), 230 states have return successors, (1059), 1049 states have call predecessors, (1059), 1059 states have call successors, (1059) [2024-11-14 03:03:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4006 states to 4006 states and 5840 transitions. [2024-11-14 03:03:21,913 INFO L78 Accepts]: Start accepts. Automaton has 4006 states and 5840 transitions. Word has length 378 [2024-11-14 03:03:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:21,914 INFO L471 AbstractCegarLoop]: Abstraction has 4006 states and 5840 transitions. [2024-11-14 03:03:21,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-14 03:03:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4006 states and 5840 transitions. [2024-11-14 03:03:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-14 03:03:21,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:21,936 INFO L215 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] [2024-11-14 03:03:21,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:03:21,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:21,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1138040748, now seen corresponding path program 1 times [2024-11-14 03:03:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:21,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348829501] [2024-11-14 03:03:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3479 trivial. 0 not checked. [2024-11-14 03:03:52,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348829501] [2024-11-14 03:03:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348829501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905610644] [2024-11-14 03:03:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:52,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:52,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:52,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:52,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:05:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:23,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 6821 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:05:23,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3485 backedges. 989 proven. 0 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2024-11-14 03:05:23,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:05:23,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905610644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:23,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:05:23,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-14 03:05:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801372661] [2024-11-14 03:05:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:23,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:05:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:05:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:05:23,395 INFO L87 Difference]: Start difference. First operand 4006 states and 5840 transitions. Second operand has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-14 03:05:25,523 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 [] [2024-11-14 03:05:27,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:29,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:33,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:35,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:38,321 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 [] [2024-11-14 03:05:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:41,380 INFO L93 Difference]: Finished difference Result 7956 states and 11604 transitions. [2024-11-14 03:05:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:05:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 378 [2024-11-14 03:05:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:41,410 INFO L225 Difference]: With dead ends: 7956 [2024-11-14 03:05:41,410 INFO L226 Difference]: Without dead ends: 4018 [2024-11-14 03:05:41,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:05:41,426 INFO L432 NwaCegarLoop]: 869 mSDtfsCounter, 0 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:41,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2600 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 282 Invalid, 6 Unknown, 0 Unchecked, 17.8s Time] [2024-11-14 03:05:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2024-11-14 03:05:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4018. [2024-11-14 03:05:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 2723 states have (on average 1.3709144326110907) internal successors, (3733), 2745 states have internal predecessors, (3733), 1060 states have call successors, (1060), 235 states have call predecessors, (1060), 234 states have return successors, (1063), 1049 states have call predecessors, (1063), 1059 states have call successors, (1063) [2024-11-14 03:05:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 5856 transitions. [2024-11-14 03:05:41,691 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 5856 transitions. Word has length 378 [2024-11-14 03:05:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:41,694 INFO L471 AbstractCegarLoop]: Abstraction has 4018 states and 5856 transitions. [2024-11-14 03:05:41,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-14 03:05:41,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 5856 transitions. [2024-11-14 03:05:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-14 03:05:41,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:41,719 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 4, 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] [2024-11-14 03:05:41,921 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2024-11-14 03:05:42,122 FATAL L548 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Could not destroy process within 200 ms, abandoning it [2024-11-14 03:05:42,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:42,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1276463964, now seen corresponding path program 1 times [2024-11-14 03:05:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:42,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263679570] [2024-11-14 03:05:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:06:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2024-11-14 03:06:09,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:06:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263679570] [2024-11-14 03:06:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263679570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:06:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479696485] [2024-11-14 03:06:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:09,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:09,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:09,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7873aea-8760-4a17-befc-7c172b96c1bf/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:10:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:10:05,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 6881 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:10:05,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:10:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 998 proven. 1 refuted. 0 times theorem prover too weak. 2508 trivial. 0 not checked. [2024-11-14 03:10:06,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:10:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2024-11-14 03:10:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479696485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:10:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140084213] [2024-11-14 03:10:10,835 INFO L159 IcfgInterpreter]: Started Sifa with 189 locations of interest [2024-11-14 03:10:10,835 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:10:10,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:10:10,844 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:10:10,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs