./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/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_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/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_270ec362-d15a-4a25-ba99-115645bdc9c9/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 19290a926baf25addf4978704839db0abeadfa27fdfeabe3829a382dc34ef323 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:52:37,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:52:38,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:52:38,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:52:38,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:52:38,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:52:38,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:52:38,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:52:38,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:52:38,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:52:38,154 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:52:38,154 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:52:38,155 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:52:38,157 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:52:38,157 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:52:38,158 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:52:38,158 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:52:38,159 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:52:38,159 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:52:38,160 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:52:38,160 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:52:38,161 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:52:38,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:52:38,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:52:38,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:52:38,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:52:38,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:52:38,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:52:38,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:52:38,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:52:38,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:52:38,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:52:38,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:52:38,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:38,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:52:38,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:52:38,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:52:38,169 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:52:38,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:52:38,170 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:52:38,170 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:52:38,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:52:38,171 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_270ec362-d15a-4a25-ba99-115645bdc9c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19290a926baf25addf4978704839db0abeadfa27fdfeabe3829a382dc34ef323 [2023-11-19 04:52:38,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:52:38,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:52:38,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:52:38,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:52:38,566 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:52:38,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i [2023-11-19 04:52:42,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:52:42,859 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:52:42,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i [2023-11-19 04:52:42,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/data/722569102/35a11675ad6049929e1fc2b132f8314d/FLAG32a3d8b3c [2023-11-19 04:52:42,948 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/data/722569102/35a11675ad6049929e1fc2b132f8314d [2023-11-19 04:52:42,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:52:42,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:52:42,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:42,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:52:42,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:52:42,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:42" (1/1) ... [2023-11-19 04:52:42,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38627ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:42, skipping insertion in model container [2023-11-19 04:52:42,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:42" (1/1) ... [2023-11-19 04:52:43,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:52:44,968 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_270ec362-d15a-4a25-ba99-115645bdc9c9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i[195799,195812] [2023-11-19 04:52:45,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:45,059 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:52:45,224 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3927] [2023-11-19 04:52:45,486 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_270ec362-d15a-4a25-ba99-115645bdc9c9/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i[195799,195812] [2023-11-19 04:52:45,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:45,655 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:52:45,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45 WrapperNode [2023-11-19 04:52:45,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:45,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:45,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:52:45,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:52:45,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:45,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,021 INFO L138 Inliner]: procedures = 188, calls = 1431, calls flagged for inlining = 94, calls inlined = 89, statements flattened = 3834 [2023-11-19 04:52:46,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:46,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:52:46,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:52:46,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:52:46,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:52:46,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:52:46,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:52:46,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:52:46,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (1/1) ... [2023-11-19 04:52:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:46,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:46,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:52:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:52:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2023-11-19 04:52:46,447 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2023-11-19 04:52:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:52:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 04:52:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 04:52:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure sd_pre_dma_transfer [2023-11-19 04:52:46,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_pre_dma_transfer [2023-11-19 04:52:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:52:46,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:52:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:52:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_probe [2023-11-19 04:52:46,450 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_probe [2023-11-19 04:52:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 04:52:46,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 04:52:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_start_run [2023-11-19 04:52:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_start_run [2023-11-19 04:52:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_extblock_cmd [2023-11-19 04:52:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_extblock_cmd [2023-11-19 04:52:46,451 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_op_multi [2023-11-19 04:52:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_op_multi [2023-11-19 04:52:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:52:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:52:46,452 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_dma_transfer [2023-11-19 04:52:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_dma_transfer [2023-11-19 04:52:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure sd_request [2023-11-19 04:52:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_request [2023-11-19 04:52:46,453 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-19 04:52:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-19 04:52:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure sd_send_cmd_get_rsp [2023-11-19 04:52:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_send_cmd_get_rsp [2023-11-19 04:52:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure sd_clear_error [2023-11-19 04:52:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_clear_error [2023-11-19 04:52:46,454 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_ro [2023-11-19 04:52:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_ro [2023-11-19 04:52:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:52:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 04:52:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 04:52:46,455 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_data_len [2023-11-19 04:52:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_data_len [2023-11-19 04:52:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:52:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:52:46,456 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 04:52:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 04:52:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2023-11-19 04:52:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2023-11-19 04:52:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:52:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:52:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_switch_clock [2023-11-19 04:52:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_switch_clock [2023-11-19 04:52:46,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 04:52:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 04:52:46,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:52:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:52:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-19 04:52:46,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-19 04:52:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_cd [2023-11-19 04:52:46,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_cd [2023-11-19 04:52:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure sd_response_type [2023-11-19 04:52:46,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_response_type [2023-11-19 04:52:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_dev [2023-11-19 04:52:46,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_dev [2023-11-19 04:52:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:52:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_sd_cmd [2023-11-19 04:52:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_sd_cmd [2023-11-19 04:52:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_card_exclusive_check [2023-11-19 04:52:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_card_exclusive_check [2023-11-19 04:52:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 04:52:46,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 04:52:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:52:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure sd_rw_cmd [2023-11-19 04:52:46,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_rw_cmd [2023-11-19 04:52:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 04:52:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 04:52:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:52:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:52:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_post_req [2023-11-19 04:52:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_post_req [2023-11-19 04:52:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd_no_wait [2023-11-19 04:52:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd_no_wait [2023-11-19 04:52:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd [2023-11-19 04:52:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd [2023-11-19 04:52:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:52:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-19 04:52:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-19 04:52:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure sd_read_data [2023-11-19 04:52:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_read_data [2023-11-19 04:52:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2023-11-19 04:52:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2023-11-19 04:52:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-19 04:52:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-19 04:52:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:52:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:52:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-19 04:52:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-19 04:52:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_write_register [2023-11-19 04:52:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_write_register [2023-11-19 04:52:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:52:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:52:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure sd_change_phase [2023-11-19 04:52:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_change_phase [2023-11-19 04:52:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-19 04:52:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-19 04:52:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_card_uhs [2023-11-19 04:52:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_card_uhs [2023-11-19 04:52:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_remove [2023-11-19 04:52:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_remove [2023-11-19 04:52:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 04:52:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 04:52:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_add_cmd [2023-11-19 04:52:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_add_cmd [2023-11-19 04:52:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:52:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2023-11-19 04:52:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2023-11-19 04:52:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-19 04:52:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-19 04:52:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_read_register [2023-11-19 04:52:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_read_register [2023-11-19 04:52:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:52:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:52:47,293 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:52:47,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:52:47,663 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:52:57,201 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:52:59,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:52:59,005 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:52:59,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:59 BoogieIcfgContainer [2023-11-19 04:52:59,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:52:59,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:52:59,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:52:59,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:52:59,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:52:42" (1/3) ... [2023-11-19 04:52:59,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffbf851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:59, skipping insertion in model container [2023-11-19 04:52:59,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:45" (2/3) ... [2023-11-19 04:52:59,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffbf851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:59, skipping insertion in model container [2023-11-19 04:52:59,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:59" (3/3) ... [2023-11-19 04:52:59,037 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--mmc--host--rtsx_pci_sdmmc.ko-entry_point.cil.out.i [2023-11-19 04:52:59,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:52:59,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:52:59,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:52:59,196 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;@52616868, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:52:59,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:52:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 922 states, 539 states have (on average 1.3599257884972171) internal successors, (733), 576 states have internal predecessors, (733), 330 states have call successors, (330), 53 states have call predecessors, (330), 52 states have return successors, (325), 319 states have call predecessors, (325), 325 states have call successors, (325) [2023-11-19 04:52:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 04:52:59,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:59,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-19 04:52:59,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:52:59,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash 761562562, now seen corresponding path program 1 times [2023-11-19 04:52:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:52:59,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347652613] [2023-11-19 04:52:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:59,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:00,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:53:00,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533398670] [2023-11-19 04:53:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:53:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:00,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:53:00,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:53:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:01,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:53:01,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:53:01,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:01,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:53:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347652613] [2023-11-19 04:53:01,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:53:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533398670] [2023-11-19 04:53:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533398670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:01,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:01,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:53:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868085443] [2023-11-19 04:53:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:53:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:53:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:53:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:01,165 INFO L87 Difference]: Start difference. First operand has 922 states, 539 states have (on average 1.3599257884972171) internal successors, (733), 576 states have internal predecessors, (733), 330 states have call successors, (330), 53 states have call predecessors, (330), 52 states have return successors, (325), 319 states have call predecessors, (325), 325 states have call successors, (325) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:53:05,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:08,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:10,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:11,914 INFO L93 Difference]: Finished difference Result 2732 states and 4151 transitions. [2023-11-19 04:53:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:53:11,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2023-11-19 04:53:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:11,959 INFO L225 Difference]: With dead ends: 2732 [2023-11-19 04:53:11,959 INFO L226 Difference]: Without dead ends: 1804 [2023-11-19 04:53:11,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:11,976 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 1360 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:11,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 2496 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 247 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-11-19 04:53:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-11-19 04:53:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1792. [2023-11-19 04:53:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1052 states have (on average 1.346958174904943) internal successors, (1417), 1112 states have internal predecessors, (1417), 640 states have call successors, (640), 100 states have call predecessors, (640), 99 states have return successors, (639), 625 states have call predecessors, (639), 639 states have call successors, (639) [2023-11-19 04:53:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2696 transitions. [2023-11-19 04:53:12,288 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2696 transitions. Word has length 80 [2023-11-19 04:53:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2696 transitions. [2023-11-19 04:53:12,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:53:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2696 transitions. [2023-11-19 04:53:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 04:53:12,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:12,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-19 04:53:12,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:53:12,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 04:53:12,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:12,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1982581909, now seen corresponding path program 1 times [2023-11-19 04:53:12,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:53:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047277249] [2023-11-19 04:53:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:12,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:12,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:53:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425322614] [2023-11-19 04:53:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:53:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:12,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:53:12,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:53:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:13,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:53:13,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:53:13,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:13,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:53:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047277249] [2023-11-19 04:53:13,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:53:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425322614] [2023-11-19 04:53:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425322614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:13,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:13,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:53:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117309811] [2023-11-19 04:53:13,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:13,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:53:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:53:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:53:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:13,832 INFO L87 Difference]: Start difference. First operand 1792 states and 2696 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:53:15,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:19,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:22,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:24,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:53:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:25,515 INFO L93 Difference]: Finished difference Result 3582 states and 5393 transitions. [2023-11-19 04:53:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:53:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2023-11-19 04:53:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:25,541 INFO L225 Difference]: With dead ends: 3582 [2023-11-19 04:53:25,541 INFO L226 Difference]: Without dead ends: 1800 [2023-11-19 04:53:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:25,565 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 1336 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2472 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2023-11-19 04:53:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2023-11-19 04:53:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1788. [2023-11-19 04:53:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1050 states have (on average 1.3457142857142856) internal successors, (1413), 1110 states have internal predecessors, (1413), 638 states have call successors, (638), 100 states have call predecessors, (638), 99 states have return successors, (637), 623 states have call predecessors, (637), 637 states have call successors, (637) [2023-11-19 04:53:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2688 transitions. [2023-11-19 04:53:25,752 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2688 transitions. Word has length 82 [2023-11-19 04:53:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:25,753 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2688 transitions. [2023-11-19 04:53:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:53:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2688 transitions. [2023-11-19 04:53:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:53:25,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:25,760 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-19 04:53:25,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:53:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:53:25,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:25,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1581599909, now seen corresponding path program 1 times [2023-11-19 04:53:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:53:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255757038] [2023-11-19 04:53:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:26,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:53:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36471089] [2023-11-19 04:53:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:26,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:53:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:26,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:53:26,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_270ec362-d15a-4a25-ba99-115645bdc9c9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:53:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:27,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:53:27,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:53:27,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:27,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:53:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255757038] [2023-11-19 04:53:27,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:53:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36471089] [2023-11-19 04:53:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36471089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:27,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:27,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:53:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035496815] [2023-11-19 04:53:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:27,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:53:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:53:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:53:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:27,304 INFO L87 Difference]: Start difference. First operand 1788 states and 2688 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:53:28,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []