./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX --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 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:59:55,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:59:55,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:59:55,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:59:55,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:59:55,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:59:55,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:59:55,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:59:55,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:59:55,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:59:55,217 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:59:55,219 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:59:55,219 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:59:55,221 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:59:55,221 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:59:55,222 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:59:55,222 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:59:55,223 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:59:55,223 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:59:55,224 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:59:55,224 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:59:55,225 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:59:55,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:59:55,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:59:55,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:59:55,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:59:55,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:59:55,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:59:55,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:59:55,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:59:55,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:59:55,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:59:55,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:59:55,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:55,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:59:55,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:59:55,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:59:55,232 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:59:55,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:59:55,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:59:55,233 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:59:55,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:59:55,234 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_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2023-11-12 00:59:55,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:59:55,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:59:55,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:59:55,635 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:59:55,635 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:59:55,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-12 00:59:58,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:59:59,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:59:59,383 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-12 00:59:59,475 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/data/6e36466f7/a39b9efbd83d47a580c2b23845595183/FLAG2dac49590 [2023-11-12 00:59:59,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/data/6e36466f7/a39b9efbd83d47a580c2b23845595183 [2023-11-12 00:59:59,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:59:59,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:59:59,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:59,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:59:59,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:59:59,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e21edba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59, skipping insertion in model container [2023-11-12 00:59:59,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,659 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:01,507 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_6b7218a5-593e-465e-a5a3-9a103749bfba/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-12 01:00:01,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:01,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:00:01,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [2235-2236] [2023-11-12 01:00:01,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [2246-2247] [2023-11-12 01:00:01,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2250-2251] [2023-11-12 01:00:01,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2254-2255] [2023-11-12 01:00:01,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2258-2259] [2023-11-12 01:00:01,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3367] [2023-11-12 01:00:01,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4766] [2023-11-12 01:00:01,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4769] [2023-11-12 01:00:01,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4772] [2023-11-12 01:00:01,926 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4775] [2023-11-12 01:00:01,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4778] [2023-11-12 01:00:02,038 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_6b7218a5-593e-465e-a5a3-9a103749bfba/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-12 01:00:02,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:02,283 WARN L672 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:00:02,292 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:00:02,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02 WrapperNode [2023-11-12 01:00:02,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:02,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:02,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:00:02,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:00:02,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,613 INFO L138 Inliner]: procedures = 286, calls = 2243, calls flagged for inlining = 112, calls inlined = 107, statements flattened = 6016 [2023-11-12 01:00:02,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:02,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:00:02,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:00:02,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:00:02,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:02,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:03,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:03,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:03,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:00:03,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:00:03,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:00:03,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:00:03,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (1/1) ... [2023-11-12 01:00:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:03,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:03,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:00:03,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:00:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_perm_bits [2023-11-12 01:00:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_perm_bits [2023-11-12 01:00:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_disable [2023-11-12 01:00:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_disable [2023-11-12 01:00:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_find_cap_start [2023-11-12 01:00:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_find_cap_start [2023-11-12 01:00:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask_handler [2023-11-12 01:00:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask_handler [2023-11-12 01:00:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 01:00:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_intx [2023-11-12 01:00:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_intx [2023-11-12 01:00:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 01:00:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_perm_bits [2023-11-12 01:00:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_perm_bits [2023-11-12 01:00:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure p_setb [2023-11-12 01:00:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setb [2023-11-12 01:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_ioctl [2023-11-12 01:00:03,249 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_ioctl [2023-11-12 01:00:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-12 01:00:03,252 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-12 01:00:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_disable [2023-11-12 01:00:03,252 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_disable [2023-11-12 01:00:03,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 01:00:03,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 01:00:03,253 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_read_config_word [2023-11-12 01:00:03,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_read_config_word [2023-11-12 01:00:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-11-12 01:00:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-11-12 01:00:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure p_setd [2023-11-12 01:00:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setd [2023-11-12 01:00:03,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2023-11-12 01:00:03,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2023-11-12 01:00:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-12 01:00:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-12 01:00:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure p_setw [2023-11-12 01:00:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setw [2023-11-12 01:00:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 01:00:03,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 01:00:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 01:00:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 01:00:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-12 01:00:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-12 01:00:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 01:00:03,256 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 01:00:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-11-12 01:00:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-11-12 01:00:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure pci_reset_function [2023-11-12 01:00:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_reset_function [2023-11-12 01:00:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-12 01:00:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-12 01:00:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure pcibios_err_to_errno [2023-11-12 01:00:03,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pcibios_err_to_errno [2023-11-12 01:00:03,259 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-12 01:00:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-12 01:00:03,260 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 01:00:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 01:00:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_probe [2023-11-12 01:00:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_probe [2023-11-12 01:00:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 01:00:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 01:00:03,261 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask [2023-11-12 01:00:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask [2023-11-12 01:00:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_deactivate [2023-11-12 01:00:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_deactivate [2023-11-12 01:00:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:00:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-12 01:00:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-12 01:00:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure kasprintf [2023-11-12 01:00:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kasprintf [2023-11-12 01:00:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-12 01:00:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-12 01:00:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:00:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq_nosync [2023-11-12 01:00:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq_nosync [2023-11-12 01:00:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-12 01:00:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-12 01:00:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-12 01:00:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_mask [2023-11-12 01:00:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_mask [2023-11-12 01:00:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 01:00:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 01:00:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fill_vconfig_bytes [2023-11-12 01:00:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fill_vconfig_bytes [2023-11-12 01:00:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:00:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_set_signal [2023-11-12 01:00:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_set_signal [2023-11-12 01:00:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 01:00:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 01:00:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 01:00:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2023-11-12 01:00:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2023-11-12 01:00:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 01:00:03,267 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 01:00:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_write [2023-11-12 01:00:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_write [2023-11-12 01:00:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 01:00:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 01:00:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 01:00:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 01:00:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-11-12 01:00:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-11-12 01:00:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 01:00:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 01:00:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-12 01:00:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-12 01:00:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2023-11-12 01:00:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2023-11-12 01:00:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 01:00:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 01:00:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 01:00:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2023-11-12 01:00:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2023-11-12 01:00:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2023-11-12 01:00:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2023-11-12 01:00:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure iommu_group_put [2023-11-12 01:00:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure iommu_group_put [2023-11-12 01:00:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 01:00:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_word [2023-11-12 01:00:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_word [2023-11-12 01:00:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_selected_regions [2023-11-12 01:00:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_selected_regions [2023-11-12 01:00:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:00:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 01:00:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 01:00:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fdget [2023-11-12 01:00:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fdget [2023-11-12 01:00:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mem_readwrite [2023-11-12 01:00:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mem_readwrite [2023-11-12 01:00:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 01:00:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 01:00:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2023-11-12 01:00:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2023-11-12 01:00:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_uninit_perm_bits [2023-11-12 01:00:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_uninit_perm_bits [2023-11-12 01:00:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:00:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-12 01:00:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-12 01:00:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-12 01:00:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-12 01:00:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2023-11-12 01:00:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2023-11-12 01:00:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-12 01:00:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-12 01:00:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 01:00:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 01:00:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_write [2023-11-12 01:00:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_write [2023-11-12 01:00:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_send_intx_eventfd [2023-11-12 01:00:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_send_intx_eventfd [2023-11-12 01:00:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:00:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_block [2023-11-12 01:00:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_block [2023-11-12 01:00:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_read [2023-11-12 01:00:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_read [2023-11-12 01:00:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_read [2023-11-12 01:00:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_read [2023-11-12 01:00:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-12 01:00:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-12 01:00:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_virqfd_exit [2023-11-12 01:00:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_virqfd_exit [2023-11-12 01:00:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:00:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_dword [2023-11-12 01:00:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_dword [2023-11-12 01:00:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2023-11-12 01:00:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2023-11-12 01:00:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2023-11-12 01:00:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2023-11-12 01:00:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:00:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2023-11-12 01:00:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2023-11-12 01:00:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-12 01:00:03,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-12 01:00:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_get_irq_count [2023-11-12 01:00:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_get_irq_count [2023-11-12 01:00:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-12 01:00:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-12 01:00:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_set_irqs_ioctl [2023-11-12 01:00:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_set_irqs_ioctl [2023-11-12 01:00:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-12 01:00:03,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-12 01:00:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_config_do_rw [2023-11-12 01:00:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_config_do_rw [2023-11-12 01:00:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_disable [2023-11-12 01:00:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_disable [2023-11-12 01:00:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-12 01:00:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-12 01:00:03,297 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mmap [2023-11-12 01:00:03,297 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mmap [2023-11-12 01:00:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-12 01:00:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-12 01:00:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 01:00:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 01:00:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_vector_signal [2023-11-12 01:00:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_vector_signal [2023-11-12 01:00:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2023-11-12 01:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2023-11-12 01:00:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 01:00:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-12 01:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-12 01:00:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_io_readwrite [2023-11-12 01:00:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_io_readwrite [2023-11-12 01:00:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:00:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure pci_load_and_free_saved_state [2023-11-12 01:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_load_and_free_saved_state [2023-11-12 01:00:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_config_readwrite [2023-11-12 01:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_config_readwrite [2023-11-12 01:00:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:00:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:00:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 01:00:03,301 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 01:00:04,110 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:04,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:04,455 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 01:00:04,973 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume 0 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := 0; [2023-11-12 01:00:04,974 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !(0 == #t~mem205#1 % 18446744073709551616); [2023-11-12 01:00:04,974 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume 512 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := #t~mem205#1; [2023-11-12 01:00:04,974 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume !(512 == #t~mem205#1 % 18446744073709551616);assume #t~nondet206#1 % 18446744073709551616 <= #t~mem205#1 % 18446744073709551616;assume #t~nondet206#1 % 18446744073709551616 <= 512; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume #t~short208#1;call #t~mem207#1 := read~int(~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8);#t~short208#1 := #t~mem207#1 % 18446744073709551616 > 4095; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !#t~short208#1; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-4: #t~short208#1 := 0 != #t~nondet206#1 % 18446744073709551616; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume #t~short208#1;havoc #t~mem204#1;havoc #t~mem205#1;havoc #t~nondet206#1;havoc #t~mem207#1;havoc #t~short208#1;call #t~mem209#1 := read~int(~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4); [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume !#t~short208#1;havoc #t~mem204#1;havoc #t~mem205#1;havoc #t~nondet206#1;havoc #t~mem207#1;havoc #t~short208#1; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume 0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296;#t~nondet210#1 := 4; [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume !(0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296); [2023-11-12 01:00:04,975 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-2: assume false;#t~nondet210#1 := #t~mem209#1; [2023-11-12 01:00:04,976 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-2: assume !false;assume #t~nondet210#1 % 4294967296 >= #t~mem209#1 % 4294967296;assume #t~nondet210#1 % 4294967296 >= 4;assume #t~nondet210#1 % 4294967296 <= 4 + #t~mem209#1 % 4294967296; [2023-11-12 01:00:04,976 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-4: call write~int(#t~nondet210#1, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4);havoc #t~mem209#1;havoc #t~nondet210#1; [2023-11-12 01:00:04,976 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume #t~short198#1;havoc #t~mem192#1;havoc #t~mem193#1;havoc #t~mem194#1;havoc #t~mem196#1;havoc #t~mem195#1;havoc #t~mem197#1;havoc #t~short198#1;call #t~mem199#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem201#1 := read~int(~pdev~2#1.base, 8 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem199#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem199#1 % 4294967296 % 18446744073709551616 else #t~mem199#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8);call #t~mem200#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem202#1 := read~int(~pdev~2#1.base, 1242 + ~pdev~2#1.offset + 56 * (if #t~mem200#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem200#1 % 4294967296 % 18446744073709551616 else #t~mem200#1 % 4294967296 % 18446744073709551616 - 18446744073709551616), 8);call write~int(1 + (#t~mem201#1 - #t~mem202#1), ~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8);havoc #t~mem199#1;havoc #t~mem201#1;havoc #t~mem200#1;havoc #t~mem202#1; [2023-11-12 01:00:04,977 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume !#t~short198#1;havoc #t~mem192#1;havoc #t~mem193#1;havoc #t~mem194#1;havoc #t~mem196#1;havoc #t~mem195#1;havoc #t~mem197#1;havoc #t~short198#1;call write~int(0, ~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8); [2023-11-12 01:00:04,977 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-2: call #t~mem203#1 := read~int(~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8); [2023-11-12 01:00:04,977 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume #t~short198#1; [2023-11-12 01:00:04,985 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !#t~short198#1;call #t~mem194#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem196#1 := read~int(~pdev~2#1.base, 8 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem194#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem194#1 % 4294967296 % 18446744073709551616 else #t~mem194#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8);call #t~mem195#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem197#1 := read~int(~pdev~2#1.base, 1242 + ~pdev~2#1.offset + 56 * (if #t~mem195#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem195#1 % 4294967296 % 18446744073709551616 else #t~mem195#1 % 4294967296 % 18446744073709551616 - 18446744073709551616), 8);#t~short198#1 := #t~mem196#1 % 18446744073709551616 != #t~mem197#1 % 18446744073709551616; [2023-11-12 01:00:04,986 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume 0 == #t~mem203#1 % 18446744073709551616;havoc #t~mem203#1;call write~int(0, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4); [2023-11-12 01:00:04,986 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume !(0 == #t~mem203#1 % 18446744073709551616);havoc #t~mem203#1;call write~int(3, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4);call #t~mem204#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem205#1 := read~int(~pdev~2#1.base, 24 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem204#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem204#1 % 4294967296 % 18446744073709551616 else #t~mem204#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8); [2023-11-12 01:00:09,697 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:13,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:13,552 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:00:13,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:13 BoogieIcfgContainer [2023-11-12 01:00:13,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:13,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:13,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:13,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:13,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:59:59" (1/3) ... [2023-11-12 01:00:13,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc87571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:13, skipping insertion in model container [2023-11-12 01:00:13,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:02" (2/3) ... [2023-11-12 01:00:13,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc87571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:13, skipping insertion in model container [2023-11-12 01:00:13,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:13" (3/3) ... [2023-11-12 01:00:13,572 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-12 01:00:13,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:13,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:00:13,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:13,720 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;@22cf48e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:13,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:00:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 1492 states, 960 states have (on average 1.4020833333333333) internal successors, (1346), 993 states have internal predecessors, (1346), 433 states have call successors, (433), 97 states have call predecessors, (433), 97 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2023-11-12 01:00:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 01:00:13,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:13,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:13,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:13,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash -363785416, now seen corresponding path program 1 times [2023-11-12 01:00:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:13,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967025720] [2023-11-12 01:00:13,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:14,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:14,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967025720] [2023-11-12 01:00:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967025720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:14,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:14,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499560622] [2023-11-12 01:00:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:14,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:14,549 INFO L87 Difference]: Start difference. First operand has 1492 states, 960 states have (on average 1.4020833333333333) internal successors, (1346), 993 states have internal predecessors, (1346), 433 states have call successors, (433), 97 states have call predecessors, (433), 97 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 01:00:18,050 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 [] [2023-11-12 01:00:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:19,198 INFO L93 Difference]: Finished difference Result 3176 states and 4713 transitions. [2023-11-12 01:00:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-12 01:00:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:19,240 INFO L225 Difference]: With dead ends: 3176 [2023-11-12 01:00:19,241 INFO L226 Difference]: Without dead ends: 1681 [2023-11-12 01:00:19,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:19,257 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 278 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:19,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 3894 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 01:00:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-11-12 01:00:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1669. [2023-11-12 01:00:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1051 states have (on average 1.3939105613701237) internal successors, (1465), 1088 states have internal predecessors, (1465), 506 states have call successors, (506), 112 states have call predecessors, (506), 111 states have return successors, (501), 494 states have call predecessors, (501), 501 states have call successors, (501) [2023-11-12 01:00:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2472 transitions. [2023-11-12 01:00:19,483 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2472 transitions. Word has length 42 [2023-11-12 01:00:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:19,484 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2472 transitions. [2023-11-12 01:00:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 01:00:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2472 transitions. [2023-11-12 01:00:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 01:00:19,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:19,492 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:19,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:00:19,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:19,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash -712640755, now seen corresponding path program 1 times [2023-11-12 01:00:19,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:19,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684252674] [2023-11-12 01:00:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:19,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-12 01:00:19,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684252674] [2023-11-12 01:00:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684252674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758604507] [2023-11-12 01:00:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:20,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:20,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:20,006 INFO L87 Difference]: Start difference. First operand 1669 states and 2472 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 01:00:22,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 01:00:24,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 01:00:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:24,878 INFO L93 Difference]: Finished difference Result 3461 states and 5100 transitions. [2023-11-12 01:00:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-11-12 01:00:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:24,895 INFO L225 Difference]: With dead ends: 3461 [2023-11-12 01:00:24,896 INFO L226 Difference]: Without dead ends: 1793 [2023-11-12 01:00:24,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:24,905 INFO L413 NwaCegarLoop]: 1969 mSDtfsCounter, 257 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:24,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 3788 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-11-12 01:00:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-11-12 01:00:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1793. [2023-11-12 01:00:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1117 states have (on average 1.3849597135183527) internal successors, (1547), 1156 states have internal predecessors, (1547), 542 states have call successors, (542), 134 states have call predecessors, (542), 133 states have return successors, (537), 530 states have call predecessors, (537), 537 states have call successors, (537) [2023-11-12 01:00:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2626 transitions. [2023-11-12 01:00:25,032 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2626 transitions. Word has length 95 [2023-11-12 01:00:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:25,033 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2626 transitions. [2023-11-12 01:00:25,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 01:00:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2626 transitions. [2023-11-12 01:00:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-12 01:00:25,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:25,044 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:25,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:00:25,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:25,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash -270943667, now seen corresponding path program 1 times [2023-11-12 01:00:25,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:25,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197595839] [2023-11-12 01:00:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-12 01:00:26,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197595839] [2023-11-12 01:00:26,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197595839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596472131] [2023-11-12 01:00:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:26,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:26,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:26,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:00:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:27,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:00:27,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-12 01:00:28,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:28,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596472131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:28,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-12 01:00:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136689043] [2023-11-12 01:00:28,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:28,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:28,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:28,204 INFO L87 Difference]: Start difference. First operand 1793 states and 2626 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:00:30,032 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 [] [2023-11-12 01:00:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:31,406 INFO L93 Difference]: Finished difference Result 2260 states and 3277 transitions. [2023-11-12 01:00:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 241 [2023-11-12 01:00:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:31,430 INFO L225 Difference]: With dead ends: 2260 [2023-11-12 01:00:31,430 INFO L226 Difference]: Without dead ends: 2256 [2023-11-12 01:00:31,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:31,433 INFO L413 NwaCegarLoop]: 1952 mSDtfsCounter, 2121 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:31,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 2529 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 01:00:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-11-12 01:00:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2254. [2023-11-12 01:00:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1407 states have (on average 1.3773987206823028) internal successors, (1938), 1459 states have internal predecessors, (1938), 668 states have call successors, (668), 179 states have call predecessors, (668), 178 states have return successors, (665), 655 states have call predecessors, (665), 665 states have call successors, (665) [2023-11-12 01:00:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3271 transitions. [2023-11-12 01:00:31,578 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3271 transitions. Word has length 241 [2023-11-12 01:00:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:31,579 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3271 transitions. [2023-11-12 01:00:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:00:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3271 transitions. [2023-11-12 01:00:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-12 01:00:31,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:31,584 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:31,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 01:00:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:31,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:31,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 189942844, now seen corresponding path program 1 times [2023-11-12 01:00:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916174390] [2023-11-12 01:00:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-12 01:00:32,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:32,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916174390] [2023-11-12 01:00:32,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916174390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:32,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36081867] [2023-11-12 01:00:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:32,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:32,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:00:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:34,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:00:34,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-12 01:00:34,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36081867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-12 01:00:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165227576] [2023-11-12 01:00:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:34,546 INFO L87 Difference]: Start difference. First operand 2254 states and 3271 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:00:36,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 01:00:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:37,170 INFO L93 Difference]: Finished difference Result 2256 states and 3272 transitions. [2023-11-12 01:00:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:37,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 242 [2023-11-12 01:00:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:37,190 INFO L225 Difference]: With dead ends: 2256 [2023-11-12 01:00:37,190 INFO L226 Difference]: Without dead ends: 2253 [2023-11-12 01:00:37,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:37,197 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 2130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:37,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1951 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-12 01:00:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-12 01:00:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2253. [2023-11-12 01:00:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1407 states have (on average 1.3766879886282872) internal successors, (1937), 1458 states have internal predecessors, (1937), 667 states have call successors, (667), 179 states have call predecessors, (667), 178 states have return successors, (665), 655 states have call predecessors, (665), 665 states have call successors, (665) [2023-11-12 01:00:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3269 transitions. [2023-11-12 01:00:37,375 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3269 transitions. Word has length 242 [2023-11-12 01:00:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:37,376 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 3269 transitions. [2023-11-12 01:00:37,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:00:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3269 transitions. [2023-11-12 01:00:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-12 01:00:37,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:37,381 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:37,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 01:00:37,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:37,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:37,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1592527664, now seen corresponding path program 1 times [2023-11-12 01:00:37,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:37,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791497864] [2023-11-12 01:00:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-12 01:00:38,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:38,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791497864] [2023-11-12 01:00:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791497864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:38,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835458239] [2023-11-12 01:00:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:38,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:38,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:38,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:38,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7218a5-593e-465e-a5a3-9a103749bfba/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 01:00:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:40,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 3338 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:00:40,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-12 01:00:40,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835458239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-12 01:00:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263462252] [2023-11-12 01:00:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:40,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:40,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:40,588 INFO L87 Difference]: Start difference. First operand 2253 states and 3269 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-12 01:00:42,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []