./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:21,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:21,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:22:21,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:21,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:21,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:21,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:21,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:21,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:21,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:21,958 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:21,958 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:21,959 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:21,959 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:21,960 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:21,960 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:21,961 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:21,961 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:21,962 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:21,962 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:21,963 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:21,963 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:21,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:21,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:21,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:21,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:21,966 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:21,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:21,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:21,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:21,967 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:21,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:21,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:21,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:21,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:21,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:21,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:21,969 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:21,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:21,970 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:21,970 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:21,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:21,971 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_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2023-11-19 05:22:22,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:22,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:22,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:22,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:22,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:22,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:22:25,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:26,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:26,581 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:22:26,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/data/e1d302611/28768e2d93134c929769eb5c0146f567/FLAGe3bc1431a [2023-11-19 05:22:26,665 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/data/e1d302611/28768e2d93134c929769eb5c0146f567 [2023-11-19 05:22:26,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:26,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:26,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:26,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:26,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:26,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:26" (1/1) ... [2023-11-19 05:22:26,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8926c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:26, skipping insertion in model container [2023-11-19 05:22:26,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:26" (1/1) ... [2023-11-19 05:22:26,879 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:28,339 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_59d4bc56-0158-4fda-a40d-94b852be3917/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2023-11-19 05:22:28,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:28,647 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:28,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [2600] [2023-11-19 05:22:28,742 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [2608] [2023-11-19 05:22:28,984 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_59d4bc56-0158-4fda-a40d-94b852be3917/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2023-11-19 05:22:28,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:29,132 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:29,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29 WrapperNode [2023-11-19 05:22:29,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:29,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:29,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:29,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:29,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,533 INFO L138 Inliner]: procedures = 106, calls = 3479, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 4412 [2023-11-19 05:22:29,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:29,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:29,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:29,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:29,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:29,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:29,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:29,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:29,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (1/1) ... [2023-11-19 05:22:29,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:29,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:29,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59d4bc56-0158-4fda-a40d-94b852be3917/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_alloc_voice [2023-11-19 05:22:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_alloc_voice [2023-11-19 05:22:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_set_instr [2023-11-19 05:22:29,966 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_set_instr [2023-11-19 05:22:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:22:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:22:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:22:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_reset [2023-11-19 05:22:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_reset [2023-11-19 05:22:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:22:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:22:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_setup_voice [2023-11-19 05:22:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_setup_voice [2023-11-19 05:22:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:22:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:22:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:22:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:22:29,972 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:22:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_command [2023-11-19 05:22:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_command [2023-11-19 05:22:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:22:29,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:22:29,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:22:29,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:22:29,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2023-11-19 05:22:29,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2023-11-19 05:22:29,975 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-19 05:22:29,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-19 05:22:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_hw_control [2023-11-19 05:22:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_hw_control [2023-11-19 05:22:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:22:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:22:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_volume_method [2023-11-19 05:22:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_volume_method [2023-11-19 05:22:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure set_voice_volume [2023-11-19 05:22:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure set_voice_volume [2023-11-19 05:22:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:22:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_aftertouch [2023-11-19 05:22:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_aftertouch [2023-11-19 05:22:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure freq_to_fnum [2023-11-19 05:22:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure freq_to_fnum [2023-11-19 05:22:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:22:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:22:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:22:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:22:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:22:29,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:22:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:22:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_load_patch [2023-11-19 05:22:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_load_patch [2023-11-19 05:22:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:22:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:22:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_start_note [2023-11-19 05:22:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_start_note [2023-11-19 05:22:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_kill_note [2023-11-19 05:22:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_kill_note [2023-11-19 05:22:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 05:22:29,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 05:22:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:22:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:22:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:22:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_ioctl [2023-11-19 05:22:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_ioctl [2023-11-19 05:22:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure compute_finetune [2023-11-19 05:22:29,987 INFO L138 BoogieDeclarations]: Found implementation of procedure compute_finetune [2023-11-19 05:22:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_bender [2023-11-19 05:22:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_bender [2023-11-19 05:22:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_panning [2023-11-19 05:22:29,988 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_panning [2023-11-19 05:22:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:22:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:22:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:22:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:22:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:22:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:22:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2023-11-19 05:22:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2023-11-19 05:22:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure calc_vol [2023-11-19 05:22:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calc_vol [2023-11-19 05:22:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 05:22:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 05:22:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 05:22:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 05:22:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure opl3_controller [2023-11-19 05:22:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure opl3_controller [2023-11-19 05:22:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:22:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure store_instr [2023-11-19 05:22:29,993 INFO L138 BoogieDeclarations]: Found implementation of procedure store_instr [2023-11-19 05:22:29,993 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-19 05:22:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-19 05:22:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:22:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:29,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:29,994 INFO L130 BoogieDeclarations]: Found specification of procedure bend_pitch [2023-11-19 05:22:29,995 INFO L138 BoogieDeclarations]: Found implementation of procedure bend_pitch [2023-11-19 05:22:30,499 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:30,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:31,760 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:22:39,944 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:41,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:41,640 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:22:41,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:41 BoogieIcfgContainer [2023-11-19 05:22:41,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:41,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:41,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:41,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:41,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:26" (1/3) ... [2023-11-19 05:22:41,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e5817d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:41, skipping insertion in model container [2023-11-19 05:22:41,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:29" (2/3) ... [2023-11-19 05:22:41,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e5817d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:41, skipping insertion in model container [2023-11-19 05:22:41,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:41" (3/3) ... [2023-11-19 05:22:41,677 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:22:41,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:41,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:41,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:41,826 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;@25785476, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:41,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 692 states, 433 states have (on average 1.374133949191686) internal successors, (595), 449 states have internal predecessors, (595), 218 states have call successors, (218), 40 states have call predecessors, (218), 39 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-19 05:22:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-19 05:22:41,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:41,907 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 05:22:41,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:41,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 71419312, now seen corresponding path program 1 times [2023-11-19 05:22:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457347244] [2023-11-19 05:22:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2023-11-19 05:22:45,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457347244] [2023-11-19 05:22:45,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457347244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:45,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:45,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419115871] [2023-11-19 05:22:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:45,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:45,841 INFO L87 Difference]: Start difference. First operand has 692 states, 433 states have (on average 1.374133949191686) internal successors, (595), 449 states have internal predecessors, (595), 218 states have call successors, (218), 40 states have call predecessors, (218), 39 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-19 05:22:48,050 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 [] [2023-11-19 05:22:50,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:51,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:53,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:56,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:58,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:23:00,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:23:00,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:00,826 INFO L93 Difference]: Finished difference Result 1445 states and 2165 transitions. [2023-11-19 05:23:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 266 [2023-11-19 05:23:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:00,867 INFO L225 Difference]: With dead ends: 1445 [2023-11-19 05:23:00,867 INFO L226 Difference]: Without dead ends: 820 [2023-11-19 05:23:00,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:00,886 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 367 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:00,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1658 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 278 Invalid, 5 Unknown, 0 Unchecked, 14.7s Time] [2023-11-19 05:23:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-11-19 05:23:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 810. [2023-11-19 05:23:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 502 states have (on average 1.3565737051792828) internal successors, (681), 523 states have internal predecessors, (681), 257 states have call successors, (257), 50 states have call predecessors, (257), 50 states have return successors, (257), 249 states have call predecessors, (257), 257 states have call successors, (257) [2023-11-19 05:23:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1195 transitions. [2023-11-19 05:23:01,080 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1195 transitions. Word has length 266 [2023-11-19 05:23:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:01,087 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 1195 transitions. [2023-11-19 05:23:01,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-11-19 05:23:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1195 transitions. [2023-11-19 05:23:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-19 05:23:01,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:01,107 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 05:23:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:23:01,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:01,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash -756999852, now seen corresponding path program 1 times [2023-11-19 05:23:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:01,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235159159] [2023-11-19 05:23:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:01,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2023-11-19 05:23:03,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235159159] [2023-11-19 05:23:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235159159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:03,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936480578] [2023-11-19 05:23:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:03,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:03,911 INFO L87 Difference]: Start difference. First operand 810 states and 1195 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-11-19 05:23:06,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:23:08,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:23:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:08,661 INFO L93 Difference]: Finished difference Result 1522 states and 2249 transitions. [2023-11-19 05:23:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:08,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 281 [2023-11-19 05:23:08,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:08,675 INFO L225 Difference]: With dead ends: 1522 [2023-11-19 05:23:08,676 INFO L226 Difference]: Without dead ends: 810 [2023-11-19 05:23:08,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:08,683 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 902 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:08,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 902 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 05:23:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-11-19 05:23:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 810. [2023-11-19 05:23:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 502 states have (on average 1.3525896414342629) internal successors, (679), 523 states have internal predecessors, (679), 257 states have call successors, (257), 50 states have call predecessors, (257), 50 states have return successors, (257), 249 states have call predecessors, (257), 257 states have call successors, (257) [2023-11-19 05:23:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1193 transitions. [2023-11-19 05:23:08,821 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1193 transitions. Word has length 281 [2023-11-19 05:23:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:08,825 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 1193 transitions. [2023-11-19 05:23:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-11-19 05:23:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1193 transitions. [2023-11-19 05:23:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-11-19 05:23:08,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:08,837 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-11-19 05:23:08,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:23:08,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_lenErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:23:08,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1846539373, now seen corresponding path program 1 times [2023-11-19 05:23:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:08,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639101128] [2023-11-19 05:23:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:08,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2291 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2289 trivial. 0 not checked. [2023-11-19 05:23:11,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:11,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639101128] [2023-11-19 05:23:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639101128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:11,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:23:11,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927627277] [2023-11-19 05:23:11,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:11,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:11,631 INFO L87 Difference]: Start difference. First operand 810 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-19 05:23:12,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []