./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/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_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19290a926baf25addf4978704839db0abeadfa27fdfeabe3829a382dc34ef323 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:02,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:03,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:28:03,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:03,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:03,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:03,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:03,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:03,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:03,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:03,041 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:03,042 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:03,042 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:03,043 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:28:03,043 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:03,044 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:03,045 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:28:03,045 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:28:03,046 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:03,046 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:28:03,047 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:28:03,047 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:28:03,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:03,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:03,049 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:28:03,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:03,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:03,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:03,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:03,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:03,069 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:03,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:03,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:03,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:03,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:03,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:03,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:03,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:03,073 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:28:03,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:28:03,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:03,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:03,075 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:03,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:03,076 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_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19290a926baf25addf4978704839db0abeadfa27fdfeabe3829a382dc34ef323 [2023-11-23 21:28:03,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:03,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:03,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:03,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:03,362 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:03,363 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 21:28:06,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:07,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:07,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/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 [2023-11-23 21:28:07,197 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/data/3d6581409/6f93687ce0254d09b22cadfbb9924d2d/FLAG7708c7ebf [2023-11-23 21:28:07,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/data/3d6581409/6f93687ce0254d09b22cadfbb9924d2d [2023-11-23 21:28:07,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:07,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:07,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:07,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:07,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:07,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:07" (1/1) ... [2023-11-23 21:28:07,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a1d11b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:07, skipping insertion in model container [2023-11-23 21:28:07,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:07" (1/1) ... [2023-11-23 21:28:07,382 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:08,988 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_c70ee701-da5b-4332-8027-15fc45beb161/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] [2023-11-23 21:28:09,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:09,067 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:09,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3927] [2023-11-23 21:28:09,395 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_c70ee701-da5b-4332-8027-15fc45beb161/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] [2023-11-23 21:28:09,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:09,497 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:09,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09 WrapperNode [2023-11-23 21:28:09,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:09,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:09,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:09,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:09,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:09,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:09,838 INFO L138 Inliner]: procedures = 188, calls = 1431, calls flagged for inlining = 94, calls inlined = 89, statements flattened = 3834 [2023-11-23 21:28:09,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:09,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:09,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:09,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:09,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:09,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:09,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:09,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:10,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:10,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:10,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:10,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (1/1) ... [2023-11-23 21:28:10,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:10,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:10,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2023-11-23 21:28:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2023-11-23 21:28:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:28:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 21:28:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 21:28:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure sd_pre_dma_transfer [2023-11-23 21:28:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_pre_dma_transfer [2023-11-23 21:28:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:28:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:28:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:28:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_probe [2023-11-23 21:28:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_probe [2023-11-23 21:28:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:28:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:28:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_start_run [2023-11-23 21:28:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_start_run [2023-11-23 21:28:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_extblock_cmd [2023-11-23 21:28:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_extblock_cmd [2023-11-23 21:28:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_op_multi [2023-11-23 21:28:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_op_multi [2023-11-23 21:28:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:28:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:28:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_dma_transfer [2023-11-23 21:28:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_dma_transfer [2023-11-23 21:28:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure sd_request [2023-11-23 21:28:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_request [2023-11-23 21:28:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-23 21:28:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-23 21:28:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure sd_send_cmd_get_rsp [2023-11-23 21:28:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_send_cmd_get_rsp [2023-11-23 21:28:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure sd_clear_error [2023-11-23 21:28:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_clear_error [2023-11-23 21:28:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_ro [2023-11-23 21:28:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_ro [2023-11-23 21:28:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:28:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:28:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:28:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_data_len [2023-11-23 21:28:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_data_len [2023-11-23 21:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:28:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:28:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_free_host [2023-11-23 21:28:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_free_host [2023-11-23 21:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:28:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:28:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_switch_clock [2023-11-23 21:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_switch_clock [2023-11-23 21:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-23 21:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-23 21:28:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_get_cd [2023-11-23 21:28:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_get_cd [2023-11-23 21:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure sd_response_type [2023-11-23 21:28:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_response_type [2023-11-23 21:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_dev [2023-11-23 21:28:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_dev [2023-11-23 21:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure sd_cmd_set_sd_cmd [2023-11-23 21:28:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_cmd_set_sd_cmd [2023-11-23 21:28:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_card_exclusive_check [2023-11-23 21:28:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_card_exclusive_check [2023-11-23 21:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:28:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure sd_rw_cmd [2023-11-23 21:28:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_rw_cmd [2023-11-23 21:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:28:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure sdmmc_post_req [2023-11-23 21:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure sdmmc_post_req [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd_no_wait [2023-11-23 21:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd_no_wait [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_send_cmd [2023-11-23 21:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_send_cmd [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:28:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-23 21:28:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-23 21:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure sd_read_data [2023-11-23 21:28:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_read_data [2023-11-23 21:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_request_done [2023-11-23 21:28:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_request_done [2023-11-23 21:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2023-11-23 21:28:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2023-11-23 21:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:28:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2023-11-23 21:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2023-11-23 21:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_write_register [2023-11-23 21:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_write_register [2023-11-23 21:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure sd_change_phase [2023-11-23 21:28:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure sd_change_phase [2023-11-23 21:28:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-23 21:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-23 21:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_card_uhs [2023-11-23 21:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_card_uhs [2023-11-23 21:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_sdmmc_drv_remove [2023-11-23 21:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_sdmmc_drv_remove [2023-11-23 21:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:28:10,203 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_add_cmd [2023-11-23 21:28:10,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_add_cmd [2023-11-23 21:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_priv [2023-11-23 21:28:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_priv [2023-11-23 21:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2023-11-23 21:28:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2023-11-23 21:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure rtsx_pci_read_register [2023-11-23 21:28:10,204 INFO L138 BoogieDeclarations]: Found implementation of procedure rtsx_pci_read_register [2023-11-23 21:28:10,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:10,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:10,720 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:10,724 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:11,026 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:28:17,745 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:19,040 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:19,040 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:28:19,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:19 BoogieIcfgContainer [2023-11-23 21:28:19,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:19,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:19,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:19,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:19,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:07" (1/3) ... [2023-11-23 21:28:19,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b9a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:19, skipping insertion in model container [2023-11-23 21:28:19,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:09" (2/3) ... [2023-11-23 21:28:19,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b9a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:19, skipping insertion in model container [2023-11-23 21:28:19,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:19" (3/3) ... [2023-11-23 21:28:19,053 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 [2023-11-23 21:28:19,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:19,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:19,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:19,226 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;@5cc75b04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:19,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:19,238 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) [2023-11-23 21:28:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 21:28:19,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:19,287 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] [2023-11-23 21:28:19,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:19,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2124873380, now seen corresponding path program 1 times [2023-11-23 21:28:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371085871] [2023-11-23 21:28:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:19,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:28:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701394604] [2023-11-23 21:28:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:19,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:19,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:19,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:28:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:20,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:28:20,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:28:20,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:20,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371085871] [2023-11-23 21:28:20,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:28:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701394604] [2023-11-23 21:28:21,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701394604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:21,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:21,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:21,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562032163] [2023-11-23 21:28:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:21,107 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) [2023-11-23 21:28:23,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:26,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:29,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:31,859 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 [] [2023-11-23 21:28:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:32,558 INFO L93 Difference]: Finished difference Result 2732 states and 4151 transitions. [2023-11-23 21:28:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:32,560 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 [2023-11-23 21:28:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:32,594 INFO L225 Difference]: With dead ends: 2732 [2023-11-23 21:28:32,594 INFO L226 Difference]: Without dead ends: 1804 [2023-11-23 21:28:32,612 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 [2023-11-23 21:28:32,616 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 1360 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:32,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 2496 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 246 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2023-11-23 21:28:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-11-23 21:28:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1792. [2023-11-23 21:28:32,893 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) [2023-11-23 21:28:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2696 transitions. [2023-11-23 21:28:32,920 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2696 transitions. Word has length 80 [2023-11-23 21:28:32,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:32,922 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2696 transitions. [2023-11-23 21:28:32,922 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) [2023-11-23 21:28:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2696 transitions. [2023-11-23 21:28:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:28:32,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:32,936 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] [2023-11-23 21:28:32,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:28:33,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:28:33,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 385022853, now seen corresponding path program 1 times [2023-11-23 21:28:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081900705] [2023-11-23 21:28:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:33,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:28:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547909024] [2023-11-23 21:28:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:33,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:33,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:33,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:28:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:34,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:28:34,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:28:34,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:34,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081900705] [2023-11-23 21:28:34,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:28:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547909024] [2023-11-23 21:28:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547909024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723765163] [2023-11-23 21:28:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:34,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:34,516 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) [2023-11-23 21:28:38,715 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 [] [2023-11-23 21:28:41,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:43,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:44,624 INFO L93 Difference]: Finished difference Result 3582 states and 5393 transitions. [2023-11-23 21:28:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:44,625 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 [2023-11-23 21:28:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:44,643 INFO L225 Difference]: With dead ends: 3582 [2023-11-23 21:28:44,643 INFO L226 Difference]: Without dead ends: 1800 [2023-11-23 21:28:44,656 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 [2023-11-23 21:28:44,657 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 1336 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:44,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2472 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 21:28:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2023-11-23 21:28:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1788. [2023-11-23 21:28:44,789 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) [2023-11-23 21:28:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2688 transitions. [2023-11-23 21:28:44,806 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2688 transitions. Word has length 82 [2023-11-23 21:28:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:44,807 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2688 transitions. [2023-11-23 21:28:44,807 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) [2023-11-23 21:28:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2688 transitions. [2023-11-23 21:28:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:28:44,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:44,812 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] [2023-11-23 21:28:44,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:45,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:28:45,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:45,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1887927975, now seen corresponding path program 1 times [2023-11-23 21:28:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557187160] [2023-11-23 21:28:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:45,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:28:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918482018] [2023-11-23 21:28:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:45,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:45,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:45,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:28:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:46,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:28:46,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:28:46,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:46,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557187160] [2023-11-23 21:28:46,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:28:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918482018] [2023-11-23 21:28:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918482018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:46,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:46,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388901456] [2023-11-23 21:28:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:46,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:46,439 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) [2023-11-23 21:28:47,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:51,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:53,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:55,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:28:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:57,017 INFO L93 Difference]: Finished difference Result 3574 states and 5377 transitions. [2023-11-23 21:28:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:28:57,018 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 [2023-11-23 21:28:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:57,040 INFO L225 Difference]: With dead ends: 3574 [2023-11-23 21:28:57,040 INFO L226 Difference]: Without dead ends: 1796 [2023-11-23 21:28:57,056 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 [2023-11-23 21:28:57,057 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 1329 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 2472 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 [2023-11-23 21:28:57,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 2472 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2023-11-23 21:28:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-11-23 21:28:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1784. [2023-11-23 21:28:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1048 states have (on average 1.3444656488549618) internal successors, (1409), 1108 states have internal predecessors, (1409), 636 states have call successors, (636), 100 states have call predecessors, (636), 99 states have return successors, (635), 621 states have call predecessors, (635), 635 states have call successors, (635) [2023-11-23 21:28:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2680 transitions. [2023-11-23 21:28:57,330 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2680 transitions. Word has length 81 [2023-11-23 21:28:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:57,333 INFO L495 AbstractCegarLoop]: Abstraction has 1784 states and 2680 transitions. [2023-11-23 21:28:57,334 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) [2023-11-23 21:28:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2680 transitions. [2023-11-23 21:28:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:28:57,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:57,346 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] [2023-11-23 21:28:57,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:57,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:57,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:57,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 613352784, now seen corresponding path program 1 times [2023-11-23 21:28:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851609215] [2023-11-23 21:28:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:57,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:28:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120079000] [2023-11-23 21:28:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:57,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:57,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:57,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c70ee701-da5b-4332-8027-15fc45beb161/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:28:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:58,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:28:58,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:28:58,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:58,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851609215] [2023-11-23 21:28:58,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:28:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120079000] [2023-11-23 21:28:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120079000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:28:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538097393] [2023-11-23 21:28:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:58,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:28:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:28:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:28:58,725 INFO L87 Difference]: Start difference. First operand 1784 states and 2680 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) [2023-11-23 21:29:00,747 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 []