./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 0e0057cc 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_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/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_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:17:10,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:17:10,827 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:17:10,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:17:10,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:17:10,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:17:10,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:17:10,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:17:10,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:17:10,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:17:10,893 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:17:10,895 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:17:10,895 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:17:10,897 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:17:10,897 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:17:10,898 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:17:10,898 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:17:10,899 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:17:10,899 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:17:10,900 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:17:10,902 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:17:10,903 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:17:10,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:17:10,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:17:10,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:17:10,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:17:10,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:17:10,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:17:10,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:17:10,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:17:10,908 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:17:10,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:17:10,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:17:10,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:17:10,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:17:10,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:17:10,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:17:10,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:17:10,911 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:17:10,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:17:10,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:17:10,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:17:10,913 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:17:10,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:17:10,913 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_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19290a926baf25addf4978704839db0abeadfa27fdfeabe3829a382dc34ef323 [2023-11-24 23:17:11,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:17:11,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:17:11,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:17:11,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:17:11,341 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:17:11,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/../../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 [2023-11-24 23:17:14,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:17:15,227 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:17:15,228 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/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 [2023-11-24 23:17:15,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/data/cd416552c/a765c30f895e419cab6523eda21ab569/FLAG63511147b [2023-11-24 23:17:15,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/data/cd416552c/a765c30f895e419cab6523eda21ab569 [2023-11-24 23:17:15,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:17:15,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:17:15,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:17:15,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:17:15,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:17:15,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:17:15" (1/1) ... [2023-11-24 23:17:15,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739f540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:15, skipping insertion in model container [2023-11-24 23:17:15,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:17:15" (1/1) ... [2023-11-24 23:17:15,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:17:17,073 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_b67c3698-fe95-4fa5-b845-6bced70c2b03/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] [2023-11-24 23:17:17,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:17:17,171 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:17:17,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3927] [2023-11-24 23:17:17,439 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_b67c3698-fe95-4fa5-b845-6bced70c2b03/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] [2023-11-24 23:17:17,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:17:17,533 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:17:17,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17 WrapperNode [2023-11-24 23:17:17,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:17:17,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:17:17,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:17:17,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:17:17,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:17,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:17,844 INFO L138 Inliner]: procedures = 188, calls = 1431, calls flagged for inlining = 94, calls inlined = 89, statements flattened = 3898 [2023-11-24 23:17:17,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:17:17,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:17:17,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:17:17,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:17:17,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:17,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:17,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:17,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:17:18,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:17:18,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:17:18,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:17:18,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (1/1) ... [2023-11-24 23:17:18,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:17:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:18,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:17:18,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:17:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2023-11-24 23:17:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2023-11-24 23:17:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:17:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-24 23:17:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-24 23:17:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure sd_pre_dma_transfer [2023-11-24 23:17:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_pre_dma_transfer [2023-11-24 23:17:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:17:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:17:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:17:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_probe [2023-11-24 23:17:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_probe [2023-11-24 23:17:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:17:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:17:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_start_run [2023-11-24 23:17:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_start_run [2023-11-24 23:17:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_extblock_cmd [2023-11-24 23:17:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_extblock_cmd [2023-11-24 23:17:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_op_multi [2023-11-24 23:17:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_op_multi [2023-11-24 23:17:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:17:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:17:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_dma_transfer [2023-11-24 23:17:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_dma_transfer [2023-11-24 23:17:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure sd_request [2023-11-24 23:17:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_request [2023-11-24 23:17:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-24 23:17:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-24 23:17:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure sd_send_cmd_get_rsp [2023-11-24 23:17:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_send_cmd_get_rsp [2023-11-24 23:17:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure sd_clear_error [2023-11-24 23:17:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_clear_error [2023-11-24 23:17:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_ro [2023-11-24 23:17:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_ro [2023-11-24 23:17:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:17:18,246 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:17:18,246 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:17:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_data_len [2023-11-24 23:17:18,247 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_data_len [2023-11-24 23:17:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-24 23:17:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-24 23:17:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-24 23:17:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-24 23:17:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2023-11-24 23:17:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2023-11-24 23:17:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:17:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:17:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_switch_clock [2023-11-24 23:17:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_switch_clock [2023-11-24 23:17:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-24 23:17:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-24 23:17:18,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:17:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:17:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-24 23:17:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-24 23:17:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_cd [2023-11-24 23:17:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_cd [2023-11-24 23:17:18,250 INFO L130 BoogieDeclarations]: Found specification of procedure sd_response_type [2023-11-24 23:17:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_response_type [2023-11-24 23:17:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_dev [2023-11-24 23:17:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_dev [2023-11-24 23:17:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:17:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_sd_cmd [2023-11-24 23:17:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_sd_cmd [2023-11-24 23:17:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_card_exclusive_check [2023-11-24 23:17:18,253 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_card_exclusive_check [2023-11-24 23:17:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-24 23:17:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-24 23:17:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:17:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure sd_rw_cmd [2023-11-24 23:17:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_rw_cmd [2023-11-24 23:17:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-24 23:17:18,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-24 23:17:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:17:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:17:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_post_req [2023-11-24 23:17:18,255 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_post_req [2023-11-24 23:17:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd_no_wait [2023-11-24 23:17:18,256 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd_no_wait [2023-11-24 23:17:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd [2023-11-24 23:17:18,256 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd [2023-11-24 23:17:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:17:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-24 23:17:18,256 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-24 23:17:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure sd_read_data [2023-11-24 23:17:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_read_data [2023-11-24 23:17:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2023-11-24 23:17:18,258 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2023-11-24 23:17:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-24 23:17:18,258 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-24 23:17:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:17:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:17:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-24 23:17:18,259 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-24 23:17:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_write_register [2023-11-24 23:17:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_write_register [2023-11-24 23:17:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:17:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:17:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure sd_change_phase [2023-11-24 23:17:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_change_phase [2023-11-24 23:17:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-24 23:17:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-24 23:17:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_card_uhs [2023-11-24 23:17:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_card_uhs [2023-11-24 23:17:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_remove [2023-11-24 23:17:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_remove [2023-11-24 23:17:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-24 23:17:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-24 23:17:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_add_cmd [2023-11-24 23:17:18,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_add_cmd [2023-11-24 23:17:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:17:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2023-11-24 23:17:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2023-11-24 23:17:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-24 23:17:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-24 23:17:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_read_register [2023-11-24 23:17:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_read_register [2023-11-24 23:17:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:17:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:17:18,953 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:17:18,957 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:17:19,220 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:17:25,115 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:17:26,636 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:17:26,637 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:17:26,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:17:26 BoogieIcfgContainer [2023-11-24 23:17:26,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:17:26,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:17:26,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:17:26,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:17:26,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:17:15" (1/3) ... [2023-11-24 23:17:26,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c18d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:17:26, skipping insertion in model container [2023-11-24 23:17:26,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:17" (2/3) ... [2023-11-24 23:17:26,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c18d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:17:26, skipping insertion in model container [2023-11-24 23:17:26,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:17:26" (3/3) ... [2023-11-24 23:17:26,653 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 [2023-11-24 23:17:26,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:17:26,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:17:26,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:17:26,788 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;@63c0502d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:17:26,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:17:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 938 states, 555 states have (on average 1.3495495495495495) internal successors, (749), 576 states have internal predecessors, (749), 330 states have call successors, (330), 53 states have call predecessors, (330), 52 states have return successors, (325), 321 states have call predecessors, (325), 325 states have call successors, (325) [2023-11-24 23:17:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-24 23:17:26,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:26,865 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] [2023-11-24 23:17:26,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:26,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:26,880 INFO L85 PathProgramCache]: Analyzing trace with hash 878240765, now seen corresponding path program 1 times [2023-11-24 23:17:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951339667] [2023-11-24 23:17:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:27,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:27,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595469515] [2023-11-24 23:17:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:27,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:27,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:27,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:17:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:28,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:28,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:17:28,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:28,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951339667] [2023-11-24 23:17:28,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595469515] [2023-11-24 23:17:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595469515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:28,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27395720] [2023-11-24 23:17:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:28,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:28,851 INFO L87 Difference]: Start difference. First operand has 938 states, 555 states have (on average 1.3495495495495495) internal successors, (749), 576 states have internal predecessors, (749), 330 states have call successors, (330), 53 states have call predecessors, (330), 52 states have return successors, (325), 321 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) [2023-11-24 23:17:29,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:34,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:37,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:39,281 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 [] [2023-11-24 23:17:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:40,220 INFO L93 Difference]: Finished difference Result 2780 states and 4199 transitions. [2023-11-24 23:17:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:40,223 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 [2023-11-24 23:17:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:40,254 INFO L225 Difference]: With dead ends: 2780 [2023-11-24 23:17:40,254 INFO L226 Difference]: Without dead ends: 1836 [2023-11-24 23:17:40,267 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 [2023-11-24 23:17:40,270 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 1376 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2528 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 247 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2023-11-24 23:17:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2023-11-24 23:17:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1824. [2023-11-24 23:17:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1084 states have (on average 1.3367158671586716) internal successors, (1449), 1112 states have internal predecessors, (1449), 640 states have call successors, (640), 100 states have call predecessors, (640), 99 states have return successors, (639), 629 states have call predecessors, (639), 639 states have call successors, (639) [2023-11-24 23:17:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2728 transitions. [2023-11-24 23:17:40,514 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2728 transitions. Word has length 80 [2023-11-24 23:17:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:40,515 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2728 transitions. [2023-11-24 23:17:40,515 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) [2023-11-24 23:17:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2728 transitions. [2023-11-24 23:17:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-24 23:17:40,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:40,528 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] [2023-11-24 23:17:40,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:40,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:17:40,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:40,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1025911176, now seen corresponding path program 1 times [2023-11-24 23:17:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:40,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872174738] [2023-11-24 23:17:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:41,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821525739] [2023-11-24 23:17:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:41,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:41,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:17:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:42,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:42,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:17:42,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:42,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872174738] [2023-11-24 23:17:42,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821525739] [2023-11-24 23:17:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821525739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59394567] [2023-11-24 23:17:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:42,126 INFO L87 Difference]: Start difference. First operand 1824 states and 2728 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) [2023-11-24 23:17:43,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:47,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:49,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:17:51,961 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 [] [2023-11-24 23:17:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:17:52,676 INFO L93 Difference]: Finished difference Result 3646 states and 5457 transitions. [2023-11-24 23:17:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:17:52,677 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 81 [2023-11-24 23:17:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:17:52,693 INFO L225 Difference]: With dead ends: 3646 [2023-11-24 23:17:52,693 INFO L226 Difference]: Without dead ends: 1832 [2023-11-24 23:17:52,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:52,707 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1353 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:17:52,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 2504 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2023-11-24 23:17:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2023-11-24 23:17:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1820. [2023-11-24 23:17:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1082 states have (on average 1.3354898336414047) internal successors, (1445), 1110 states have internal predecessors, (1445), 638 states have call successors, (638), 100 states have call predecessors, (638), 99 states have return successors, (637), 627 states have call predecessors, (637), 637 states have call successors, (637) [2023-11-24 23:17:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2720 transitions. [2023-11-24 23:17:52,912 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2720 transitions. Word has length 81 [2023-11-24 23:17:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:17:52,913 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2720 transitions. [2023-11-24 23:17:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-24 23:17:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2720 transitions. [2023-11-24 23:17:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-24 23:17:52,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:17:52,921 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] [2023-11-24 23:17:52,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:17:53,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:53,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:17:53,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:17:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash 531337190, now seen corresponding path program 1 times [2023-11-24 23:17:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:17:53,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631034036] [2023-11-24 23:17:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:53,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:17:53,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:17:53,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071688390] [2023-11-24 23:17:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:17:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:17:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:17:53,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:17:53,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:17:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:17:54,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:17:54,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:17:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:17:54,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:17:54,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:17:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631034036] [2023-11-24 23:17:54,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:17:54,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071688390] [2023-11-24 23:17:54,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071688390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:17:54,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:17:54,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:17:54,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199666420] [2023-11-24 23:17:54,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:17:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:17:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:17:54,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:17:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:17:54,327 INFO L87 Difference]: Start difference. First operand 1820 states and 2720 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) [2023-11-24 23:17:56,351 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 [] [2023-11-24 23:18:00,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:18:03,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:18:05,324 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 [] [2023-11-24 23:18:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:06,442 INFO L93 Difference]: Finished difference Result 3638 states and 5441 transitions. [2023-11-24 23:18:06,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:06,442 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 [2023-11-24 23:18:06,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:06,462 INFO L225 Difference]: With dead ends: 3638 [2023-11-24 23:18:06,462 INFO L226 Difference]: Without dead ends: 1828 [2023-11-24 23:18:06,474 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 [2023-11-24 23:18:06,477 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1344 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:06,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2504 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 4 Unknown, 0 Unchecked, 12.0s Time] [2023-11-24 23:18:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-11-24 23:18:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1816. [2023-11-24 23:18:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1080 states have (on average 1.3342592592592593) internal successors, (1441), 1108 states have internal predecessors, (1441), 636 states have call successors, (636), 100 states have call predecessors, (636), 99 states have return successors, (635), 625 states have call predecessors, (635), 635 states have call successors, (635) [2023-11-24 23:18:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2712 transitions. [2023-11-24 23:18:06,617 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2712 transitions. Word has length 82 [2023-11-24 23:18:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:06,619 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 2712 transitions. [2023-11-24 23:18:06,619 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) [2023-11-24 23:18:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2712 transitions. [2023-11-24 23:18:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-24 23:18:06,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:06,625 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] [2023-11-24 23:18:06,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:18:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:18:06,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:18:06,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1229809857, now seen corresponding path program 1 times [2023-11-24 23:18:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:18:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440576919] [2023-11-24 23:18:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:18:07,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:18:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045910362] [2023-11-24 23:18:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:07,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:18:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:18:07,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:18:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67c3698-fe95-4fa5-b845-6bced70c2b03/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:18:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:07,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:18:07,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:18:07,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:07,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:18:07,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440576919] [2023-11-24 23:18:07,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:18:07,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045910362] [2023-11-24 23:18:07,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045910362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:07,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:07,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:18:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58954654] [2023-11-24 23:18:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:07,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:18:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:07,992 INFO L87 Difference]: Start difference. First operand 1816 states and 2712 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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)